3 Is a Magic Number Ch. 13

"Jack," my sister said sheepishly.

"Yeah, sweetie," I answered.

"I wasn't brushing my teeth because your cum tastes nasty, or anything." She was speaking in a frantic tone, like she thought that she had to apologize for something. "It is because I didn't want them to smell cum on my breath. It has nothing to do with the way that you taste; you actually taste kind of yummy." She would have rattled on if I hadn't interrupted.

"Kay, it's fine. Thank you for the blowjob. It was spontaneous and wonderful. You are the most awesome girlfriend that a guy could ever have. I just wish that I could repay the favor."

"Thanks, Jack. You are the most awesome boyfriend a girl could ever have; that even two girls could ever have. You can definitely pay me back later." She had finished brushing her hair, and was working on touching up her lip gloss.

"You sound like you have plans for us."

"I do. I hope you brought your trunks. They have a pool downstairs, and a hot tub." She gave me a conspiratorial smile, as she slid down her panties. "I can't wear these, they're soaked." I couldn't help but notice the panty liner on the inside of her pink bikini panties. I wonder what is going on with that. Katie having her period couldn't happen at a worse time. I came back into the bedroom, just as she was sliding her shorts over a pair of pale green bikini panties. I really didn't know how to go about starting a conversation for this topic, so I just jumped into it with both feet.

"Are you on your period, Kay?" She looked a little startled, but didn't look offended.

"Nope, it should be time for it soon though, probably within the next few days. I figured that it couldn't hurt to wear a liner, plus I knew that I would probably be super moist because I'd be so close to you all day. I couldn't stop thinking naughty thoughts about you all the way down here. Are you ready?"

I was, and we walked to the elevator together. I loved looking at her ass in those shorts. They really didn't leave a lot to the imagination. They climbed up her butt crack enticingly, and usually revealed a spectacular camel toe in the front. The sight was still pretty impressive even with her panty liner in. My mom calls them her "rape me" shorts. I know that most guys feel possessive, and never want their girlfriends to wear sexy stuff, not to mention their sisters; and although she was both, I didn't mind. It always made me feel like a stud when I walked into a place, and all the guys stared at the chick I was with. It never mattered to me even when she and I were platonic, and it made things a million times hotter now. We stopped touching before the elevator hit the lobby, and moved a safe distance apart. My parents were sitting in the lobby, and at the first sight of us, my dad sprang to his feet. They both looked impatient, although we had only missed the fifteen-minute mark by a minute or two; which under the circumstances, I found to be incredible.

"Thank god! I'm starving," my dad grumbled. "Katie, are you going to go out in public with those shorts on?"

"Oh, Norm, she wears those all the time. You just never notice." I noticed though. These are the exact same little pink shorts that she wore on our trip up North, a few weeks ago. I could tell that my dad still didn't like it, but he didn't want to argue. He was hungry; besides, he wasn't the type of parent to make her go back upstairs to change anyway. We walked the two blocks to Shoney's in just a few minutes.

We were seated immediately. Our waitress was a pretty young brunette. She looked like a girl working her way through college. Katie noticed my quick appraisal, and gave me a frown. I wasn't really doing anything wrong, I was just being a guy; but I kept my eyes to myself or on her for the rest of our meal. I couldn't believe that Katie ate an entire double-decker burger and fries.

It only started getting weird when my mom observed that Katie and I seemed to be getting along better over the last few weeks. Katie answered her smoothly with some shit about how we made a pact to get along better, and not to argue. She said that we could possibly get an apartment together in college. I couldn't come up with some bullshit like that right off the top of my head in a million years. I'm glad she answered the question before I stammered out something unintelligible, but her ability to fabricate plausible stories at a moment's notice is something that I will have to be on the lookout for, now that our relationship has changed. Then the bomb dropped, from my dad of all people.

"Katie-bear, are your lips swollen?" Oh fuck! By the startled look on her face, my sister was thinking the same thing. Then the deer in the headlights look fell away, and she gave an answer as slick as butter on Teflon.

"Yes, daddy," she said in her 'daddy's girl voice.' "I burnt them yesterday on my curling iron. Julia called me while I was experimenting with curling my bangs, and I tried to answer the curling iron." What the fuck? Where does she get this bullshit from?

"Ouch," my mom said. "You need to be more careful, Katie."

"I will mom. I put ice on it right afterwards. I can hardly feel it today. They are just a little swollen." And just like that, the discussion was over. If it had been my lip that had been swollen, it would have been a half an hour interrogation. I promised that from now on, I would let my sister answer any question where we had to lie. She was the sensei of deception. Then I thought about how she had acted so awkward the other day when my mom came in while I was rubbing her back. She had been in total panic mode. This was something to think about.

The walk back to the hotel was pleasant. The evening was warm, but not unbearably hot. The humidity was actually less than it usually was in Michigan. The sun was hanging low in the sky as we went into the lobby.

"What do you guys have planned for the evening?" my mom asked, as we were riding up together in the elevator. My dad had stayed downstairs in the business center to check his emails.

"We're going to head down to the pool, and then probably get some sleep," explained Katie.

"Don't stay up too late, kids. We have a full day tomorrow." My mom ruffled my short brown hair. "Set your alarm for 8 A.M."

"We will!" we chimed in unison, and just like that, we were alone for the evening. I don't actually remember walking back to the room. I just seem to remember my mom heading for her room, and then we were in ours. I expected the swimming thing not to actually happen. It seemed like when we were alone that all we ended up doing was having sex as many times as possible. This time I just got a fairly tame kiss from my sister. She told me to get my suit on, fished out a brightly colored bag from her suitcase, and walked into the bathroom.

I got my trunks out. They were a bright teal color, and were made like cargo shorts. They even had a Velcro "zipper" down the front. I'm sure that my sister would have preferred me in a speedo, but that just wasn't my style. I pulled on a baggy t-shirt, just as the bathroom door opened. My sister emerged wearing the complimentary hotel robe, with her long red curls pulled back in a ponytail. We both slipped on flip flops, she gave me a peck on the lips, and we headed downstairs to the pool.

The smell of chlorine was strong in the hallway leading up to the pool house. The pool was surprisingly large, with two large hot tubs, and a lounge area. There were huge windows that showed the sunset outside, but I still couldn't figure out why anyone would want lounge beside an indoor pool. Sure enough, there were two guys occupying loungers about mid-way down one side of the pool. They were probably in their mid-forties, and I pegged them as business travelers, rather than tourists.

We put our towels on two of the loungers closest to the hot tubs, and across from the other patrons. I pulled my shirt off, and slipped out of my flip flops. I heard the conversation of the two guys drop off suddenly, and one of them exclaimed, "Good lord!" I turned, and saw immediately what the fuss was about. Katie had removed her robe, and was wearing the briefest bikini that I had ever seen in person. The top was made of two triangles that were maybe a quarter of an inch larger than her areolas, and some string. The bottom was just as brief. The front of it was a triangle that just barely covered her pussy. I saw what had taken her so long in the bathroom: she had shaved her little strip of pubic hair off in order to wear this suit. The back was a string that ran between her two magnificent ass cheeks. She turned slowly in a circle to model it for me.

"What do you think, Jack?" she asked, perfectly confident in getting a positive reaction from me. I realized then that my mouth had been hanging open. I was busy trying to rationalize this suit in my mind. On Julia, this suit would have been remarkable. Julia is tall, and lithe, and built like a runway model. She is a smallish C cup upstairs, and is beautiful sculpted downstairs. My sister is very petite and very curvy, and built like a porn star. She is 5 feet tall, with a slim waist, and an hourglass figure. She is a DD cup upstairs, and has an ass that any Brazilian swimsuit model would kill for. On her, this suit was damn near indecent.

"Hello... Earth to Jack, what do you think?" Her big green eyes danced with amusement as she watched my reaction.

"It's... ummm... It's definitely something, Kay. Wow!" She beamed her thousand watt smile at me. I had to be the luckiest guy in the world to be with this gorgeous young woman.

"I seem to be getting the same reaction from those older guys over there," she said, motioning her head to the guys on the other side of the pool. This motion did interesting things to her breasts in that suit. I felt myself getting hard very quickly. I needed to find some water, and get in it; fast. My redheaded sex goddess read my mind; being omniscient, like all the great deities. She grabbed my hand, and led me toward the hot tub. We inched slowly into the water, because it was really fucking hot, and the two forty-somethings tried not to be too obvious while still craning their necks for a good view. Finally, the water level was up to her neck, they resumed their conversation, assuming that the show was over. She was sitting near me, but I could see that she wanted to be closer to me. I put my arm around her, and pulled her to my side. She smiled brightly at me again.

"Have I told you today how incredible you are, and how much I love you?" She actually had the nerve to look shy about this conversation while wearing those three postage stamps that she called a bikini.

"No. I don't believe you have. How much do you love me, Jackson King?" she asked breathily. I scooped her up, onto my lap, and put my arms around her.

"Katelyn King, I love you with all my heart. As much as east is far from west, and as much as north is far from south. If I could marry you tonight Katie, I would gladly do so." Tears rolled gently down her cheeks. "Is this water too hot for you, Kay?" She giggled at my attempt to lighten the mood.

"How did I ever get so lucky, Jack?" It was my turn to laugh.

"I think that everyone in this room, including those dudes over there, know that I am the luckiest man alive to be with you. You are smart, and interesting, and definitely gorgeous." She giggled musically again.

"You forgot one thing, Jack."

"What's that Kay?" I asked, genuinely puzzled.

"I'm forbidden. I'm taboo. Doesn't it make it just a bit naughtier that I'm your sister?" What she was saying was true. At first it was the rationale that I used to keep myself from acting on my impulses with her; however, after we had already consummated our relationship, her being my sister did make it hotter. "I know that you've thought about it Jack. Who else has been with me almost my entire life? You have been there for me through thick and thin, you've stood up for me against bullies, and even got your ass kicked more than once for me. You were even there for all the little things, like helping me with my homework, and teaching me how to ride my bike without training wheels. Our parents were never there to do that stuff for us. I'm not crying over spilled milk; because I think that made us stronger in a lot of ways, but it also made us depend on each other. Now we have just taken that one step farther, and depend of each other to satisfy our baser desires. What could be more natural?"

I said nothing. She was one hundred percent right in what she was saying; however, I was pretty sure that there was a tiny bit of rationalization on both our parts. I guess it is human nature to look for the good in our actions, and not for the bad. I honestly couldn't see anything evil in the two of us loving one another completely. Society said that it was wrong; but for old and outdated reasons.

I did what I did whenever the weight of society's laws leaned on me; I chose not to care. I kissed my sister passionately. She returned my passion with equal fervor. After several long minutes, she stood up and straddled me. Our lips locked again, and I lost myself in the woman that I loved. Time seemed to stand still, as our hands roamed over each other's body eagerly. For those moments, we were the only two people on Earth. She ground against my steel hard shaft through my trunks.

"I need you inside me, Jack." I kissed her neck, and just hearing her say that sent shivers down my spine.

"Sure, baby. Let's get back to the room as quickly as possible." I was already planning how to hide my erection behind my towel. I felt her shift her weight, and begin to pull on the Velcro that was holding my trunks on.

"No, Jack. I can't wait for us to get back to the room. I need it right now." Her eyes shone with an iron hard will. She would get what she wants, one way, or another. I reached down, and separated the fly in my suit, freeing my long shaft between us. Wordlessly, she slid her laughably small suit to the side, positioned me at the entrance to her tunnel of love, and pushed against me until I began to slide inside of her.

My sister is always incredibly tight, and this time didn't disappoint. It was like squeezing your hand into a fist, and then trying to shove your dick inside of it. Luckily, she was really, really wet. She began to work herself up and down on my cock, and eventually she began to work more, and more of me inside her holiest-of-holies.

"Oh god, Jack, just like that, baby!" She was being awfully loud, and I realized that I heard no conversation from the business types. With the noises we were making, and motions that we were doing, there could be no way that they didn't know that we were having sex just twenty feet away. She had given up caring, and decided just to go for it, and I just said fuck it, why not?

She was doing all the work, and I wasn't in any position to make any thrusts upward. I held her hips, to steady her, and help her to keep her rhythm. This was all about her, but I was going to do my best to cum when she did, so that I didn't have to get out of this hot tub with a raging hard on. This plan ended up having absolutely zero chance of success. She was riding me furiously, and with absolute abandon, and she came loudly twenty seconds after I touched her hips.

"Oh god, yes Jack!" she cried as she came. Her pussy contracted like a vice, but she never stopped riding me, or changed her pace one bit. "Now it's time for you, babe," she whispered in my ear. She started gripping me every time she slid my cock out of her, so that she was milking my cock.

"I'll let you know when I'm about to cum, so you can hop off, Kay."

"No. I want to feel it inside me, Jack. Please, just one more time." Her eyes were the window to her soul, and her soul was pleading with me. I melted inside. How could I say no to her?

"Sure, Katie, if that's what you want." It was really starting to feel good right now. My orgasm would happen really soon.

"Oh yeah, baby. Give me all your cum. Please cum in me, Jack. I want to feel you explode inside me. Make me your dirty cum whore." Between the rhythmically squeezing my cock with her tight teenaged pussy, and her dirty mouth, I could take no more.

"Oh god, Kay. I'm gonna cum." I tried to be discrete, but it didn't really matter anymore. My balls tightened, and I shot my load deep into my sister's belly. It kept going, and going, and when I was almost done, she came again; pushing big thick gobs of my sticky cum out into the steaming hot water. This time her orgasm was silent, because she came too hard to howl. Between how wet she was, and all of my jizz; she pushed my cock entirely out of her, and just continued to grind my shaft between her lips, and against her clit. She shook bodily for so long that I thought something might be wrong with her, and then she sagged bonelessly against me.

I let her rest for a couple of minutes, but I knew that we needed to get up, and get out of there before we were caught. As soon as I could, I slid her alleged bikini bottom back into place, and sealed up my Velcro fly. I helped her out of the hot tub, and she responded better than I had hoped. As soon as we stood up to leave, the two business guys stood up, and started clapping like they were at a Broadway show. I had to have turned beet red; but Katie, being Katie, gave them a theatrical bow, which exposed a vast amount of her boobs. She slipped on the hotel robe, and pulled me behind her by the hand.

"That is one lucky sonovabitch," I heard one business type say to the other. I had to agree wholeheartedly. The walk back up to the room seemed to take no time at all. We would have strolled hand in hand, but it would have been just our luck to run into our parents. As soon as our door was closed, Katie stripped off her robe and suit, leaving a trail of clothes headed toward the bathroom.

"I need to get this chlorine off, Jack. I can already feel my skin starting to itch. If you ask nicely, I might even let you wash me." She giggled, and poked her head out of the bathroom. "Can you grab my loofah and body wash from my suitcase?" I saw her red hair whip back through the doorway, and the water started running in the shower. I opened her suitcase and found her bath kit. I got the loofah, the peach scented body wash, and brought her shampoo and conditioner, even though she had not specifically asked for it. When I got in the bathroom, she was already in the shower rinsing off. I stripped off my trunks, and hung them off the edge of the sink to dry, and stepped into the shower with all the bottles in my arms.

"Hey handsome," she said with a big grin. "I wondered if you had missed my subtle hint that I wanted you to join me." I laughed, and started putting the bottles down on the edge of the tub. I towered over my sister by 15 inches. With her curly red hair wet, the top of her head didn't even reach my chin. I reached down, grabbed her by the waist, and lifted her up to kiss her. My arms encircled her waist, and held her there effortlessly. She might have weighed maybe 120 pounds soaking wet; which she was, in every meaning of the word. After a couple of minutes of kissing, I turned our bodies so that the water ran down my back, and didn't touch her. She broke the kiss immediately.

"Hey, big bro, that's no fair. Now I'm going to get cold." Her lip stuck out in an exaggerated pout. I put her down, and rinsed the chlorine off in earnest; and then I picked her back up, and put her in front of the shower's spray. "Thanks, but I preferred to be a little cold, but still being kissed by you." I decided to ignore the hint, and I picked up her loofah, and began squeezing body wash on it.

"I distinctly remember you saying that I could wash you." I agitated the folds of the loofah to get the soap to foam.