I planned on enjoying my friends family pool, but it turned out that he was way hung over from a party last night that I missed because of work rolled over in bed. Not even able to even greet me at the front door. Our plans had been to hang out until a little later then to try and get together with girls we didn’t know around at different places like the bigger mall two towns away. Telling me to stay and hang out, he would feel better soon. It was his sister Alissa who had greeted me at the back door to the deck and her eyes had gone from excited to see me, to all soft and flirty. She was a very cute 13 and we crushed on each other from a distance and were friends. I was 17 so people might not like our age difference, and she was my best friends little sister. Most girls really liked me and my looks. I didn’t have much difficulty getting lucky with girls and some older women. We flirt pretty heavy, even a little s******* and we laugh cause it makes her brother disgusted. We walked into the kitchen talking about the pool, her friend Rene coming over soon and that she got a new bathing suit. She agreed to go put it on and model it for me. She blushed and giggled telling me that yes it was a bikini and no, I couldn’t watch her put it on. She found me in the open garage lifting a cooler from the trunk of my car. “Wow Lissa! Holy cow!” She looked around a second asking “What? What’s wrong?!” I stepped a little closer looking her up and down. “Nothing is wrong sweetie you… you look amazing!!” Her demure side started to show and she was beginning to blush. “Sorry I… Damn girl I knew you were hot but jeeze you are smoken in that suit.” She grinned shyly and blusher even more. “Oh stop.” “No seriously turn around a couple times let me see how it fits!” Her big green eyes were shining in my admiration and she slowly turned twice stopping to face me. “You like it?” Grinning. I like the suit but I love whose in it.” That kind of slipped out but I played it off before it sank in to deep. “Turn around a sec,” twirling my finger. “What?” “Turn around I think I saw a tag or something.” She turned and I again admired her a**. “Yea this is definitely in the way.” “What is it?” It took her a moment for her to realize that I was pulling the strings on her top loose. “OHH STOP!!!” she was laughing, cupping her suit to her breasts and stepping away. “Your a bad bad boy!” “I’ll tie it back turn around.” She turned without a doubt and I did. “Have you OH MY!” My turn to wonder. “What? what is it?” Giggling and pointing at my crotch I looked down and saw the tent in my swim trunks. I had felt my balls tingling but didn’t know I was getting an erection!