Four days ago, my sister and I took $1,000 from a man and let him watch us have sex. He knew we were sister and brother, and that we were both virgins. We took each others virginities that afternoon in a seedy motel bed. We had to kiss, undress each other, rub each other, he wanted her to suck me until I was hard, I had to lick her pussy while he watched. That made her cum I thought, and she said it did when we were on the way home. Then I got on top of her between her legs, she spread open for me and brought her legs up. I kissed her deeply, and I fucked her.

He made me stop after a few minutes and interrupted us, he did this several times, I guess so I wouldn't finish so fast. After a total of about 20 minutes and about 6 of his interruptions, I shot inside her. I told her I would pull out and cum on her belly or the outside of her brunette pussy, but I couldn't, it felt too good and my instinct was to push in even deeper, not pull out. It ended up all going inside her. He was naked and jacking off while sitting on a chair close to the bed. He stood up and as pre-arranged shot into my mouth, not pre-arranged he was grabbing my ass cheeks until I swallowed his cum. He had her stand up with her legs spread and watched my cum leak out of her pretty pussy, then he got dressed, left and we got dressed and went home. She kissed me and held me before we left and again in her room when we got home. We haven't discussed it since. We do go more places together now, and find ourselves holding hands, and even lightly kissing each other more.