"Aunt Lisa what are you doing here?" I said confused.
"You mom invited me, it is a family vacation isn't it?"
Even though she knew about us I was still a little uneasy around her for some reason. Rita pulled the covers over us to hide our nakedness, but it was still a little dark in the room so I doubt she would have seen us anyway.
"It's a little late to be shy, after what I just seen I'm tempted to hop right in and join you!"
"How is it you always end up in our room?" Rita asked.
"How is it you never seem to lock your door? I think you want someone to walk in on you, you horny bastards!"
"If you were messing around with someone who looks this good, you wouldn't be able to keep your hands off her either," I said.
"That's true. She is a sexy little devil isn't she? Well I'm going to bed, I've been working all day and driving all night looking for this place, but if you think you're gonna go at it again, don't hesitate to call me, or better yet, just come over into my room, it's the one by the kitchen," she grinned as she left the room.
When the door closed we fell back into the bed. That's the second time she walked in on us having sex, and the third time we were watched, we were starting to be ok with it. I stared looking at the ceiling when Rita laid her head on my chest and looked me in the eyes.
"What were we talking about before?"
"I don't even remember, Aunt Lisa made me lose my train of thought. Come on, let's go to sleep, we've got a big day of doing nothing ahead of us," I said.
She kissed me softly on the lips and cuddled up to me as I cut out the lamplight that for some reason I was still holding. Truth is, I did know what we were talking about, but I want the rest of this trip to be Stephanie free, so I let it go.
"Goodnight Randy, I love you," she said wrapping my arm around her waist.
"Goodnight baby, I love you too," I said back. I kissed her neck and slowly drifted into a peaceful sleep.
The next morning I woke up to an empty bed, I was a little confused since the only time Rita ever gets up early is to come to my room. I put on some shorts (yea we slept naked, but it was an accident, this time), used the bathroom and brushed my teeth, and went to look for her. I looked all around the cabin, and only saw the parents and Aunt Lisa making breakfast. Finally I found her in the last place I checked, the swimming pool. She was swimming laps when she looked up and saw me.
"You just gonna stand there or you gonna get in with me?" she asked. Since I was already dressed for pool use ironically, I jumped in.
As soon as I came from under the water Rita was right in front of me, smiling. "Finally awake huh?"
"I'm surprised you're up so early, I thought you'd be sleeping in after last night."
"I know right! I have all this energy from I don't know where. I got up and cleaned the kitchen, mopped the floors, wiped all the windows and now swimming laps in the pool. All that stuff hasn't changed a thing I'm still so energetic!"
"I know a way we can put all that energy to use," I said pulling her into a kiss. I ran my hands all over her body and she did the same, never breaking the kiss. When I went inside her bikini bottoms to play with her clit she caught my hand and held it there, confusing me in the process.
"Mmmm big brother not yet," she said breaking the kiss.
"What's the matter, you want me don't you?"
"I do, but if you want me, you're gonna have to catch me first!" she said as she splashed me and swam off away from me.
Once the water cleared from my face she was halfway across the pool. I took off after her but by the time I had gotten close she climbed out of the pool and stuck her tongue out in mockery. For a moment all I could think about was how sexy she was dancing around in front of me, but then I remembered why she was dancing and jumped out to chase her. She took off running around back to the deep end of the pool, and when I got close enough to grab her, she jumped back into the pool. Now I was determined, she was not getting away from me again. I jumped in and swam after her faster than I thought I could. When I caught her I grabbed her on the foot and pulled her towards me, turned her around to face me and walked until her back hit up against the wall in the water. I had a look of hunger and lust in my eyes as I kissed her hard on the lips.
"Oh god Randy, I should make you chase me more often," she said between kisses.
She rubbed my cock through my shorts and I kissed her harder, grinding against her. I reached my hand down and this time, my hand reached its destination. I rubbed her clit in small circles underwater, and she broke the kiss and moaned into my neck. I rubbed faster and she started breathing heavier and moaning louder, which she knows only gets me hotter. I slipped two fingers in and finger fucked her as fast as humanly possible. I didn't even try to stop her from making noise, I wanted to hear her scream in pleasure, I wanted to look at her as she reached her climax, a few seconds later I got my wish.
"Oh god, oh god, I'm cumming! I'm cumming! Randy oh my god I'm cummmmmmmmmming!!!"
Even underwater I could still feel her juices as they poured out of her pussy into my hand as he held onto me for dear life so she wouldn't slip underwater.
"Fuck Randy I need you in me right now!" she moaned as her orgasm subsided.
By now my cock was rock hard so I wasn't gonna argue with her, or was I? I lifted her leg and moved her bikini bottoms to the side, and ran the tip of my cock over her clit, which made her shiver in anticipation. When she closed her eyes and leaned her head back waiting for me to plunge inside her, I dropped her leg and let her go.
"What's the matter, you want me don't you?" she said mimicking the exact same thing I said not too long ago.
"I do, but if you want me, you're gonna have to catch me first!" I told her as this time I splashed her and swam away.
This time it was her with the look of determination on her face, as she swam up behind me faster than I expected. I knew I wouldn't stand a chance in the pool so I got out and ran for the door, with her right behind me. By now my hard on had decreased a little so it wasn't too noticeable as I took off out the double doors and back into the living room area. I didn't see Rita, but I could hear her screaming after me, and I was enjoying every second of it. Running out of options, I ran to the side of the room with most of the doors and did eenie-meenie-miny-mo on the way there (sorry if I messed the spelling up on that, but can you blame me?), I picked the room with the walk in shower and bolted in there while listening to mom and dad complain about tracking water and running through the cabin. I go in the shower room and run to the corner, if I closed the door she would have definitely knew I was in there, so I left it open hoping she would pass. A couple minutes passed and I thought I had gotten one over her, I was wrong. She walked into the bathroom and locked the door, you could literally hear the lock click it was that quiet. I had that feeling in my gut my little sister was about to have her way with me again.