Deena and I donned our new 2-piece swimsuits, tight over our 13-yr old bodies. We walked out and daddy nearly gasped when he saw my hard nipples. I sa... him turn red and try not to look. My tits were small at 32b, but my nipples were big and visible through tight material. Deena was a 36c already. I liked feeling her boobs when she let me.I told daddy we were going to Deena’s to swim. We walked out the front door and then darted to the back yard to my window. After a couple minutes daddy came. Deb fondled her tits with both hands, twisting and pulling her nipples which never failed to excite her. After surveying the parking area again and not seeing anyone, Deb peeled off her blouse and put it and her bra on the passenger seat.Being so exposed in her minivan added to Deb’s excitement. She spread her legs and one hand moved to rub herself through her jeans, where Deb immediately felt the heat emanating from her crotch. Her body was electric, and Deb fumbled to undo and unzip her. I looked down slightly to see my underwear bulge rather intensely. I got awkward and shirked away from the girls softly. The moment of passion had passed, the girl’s expressions told me that even they realized that they got carried away.To hide the sexual awkwardness that suddenly corrupted us for a few minutes, we all just gasped and laughed. “Haha, see what our little paint-fight did, we are all dirty and we are out of paint”, Sanaya said. The girls moved towards the nearest washroom and. Will try and be more quiet next time’ I said, genuinely sorry, a little red in the face, but pleased she knew that me and her sister had a good time.‘Not your fault, it wasn’t you I was hearing…it was Lucy’ she replied, with a half smile, half frown and looked down at the table.It was at this point that I wondered, was there a hint of jealousy in that. Is there a small chance that Beth wished it wasn’t happening to Lucy, but to her? She had some boyfriends, but all too immature to do anything,.