I continued to lick his cock, hoping that SHE would not tell him to put it in my mouth."OK, that's enough," SHE finally said, much to my relief, "you ...an take him home now." She again dismissed us with a wave of HER hand. "But remember to pick him up again after work." Bill and I remained in embarrassed silence, refusing to look at each other while he dressed then I took him home on my way back to work. But we both knew that his cock would have gone into my mouth if SHE had ordered it, and that. Ididn't notice that we were both sitting the same and licking the icecream at the same time. Without the need to look at my sister I wasdoing everything she did simultaneously. We both finished at the sameexact second and we both had a little bit of ice cream at the bottom ofour noses."All done mommy," we said together.Mommy came over with a napkin and wiped our noses. "I don't know how yougirls do it."The next few days my sister and me did everything in unison together.Whatever my sister felt. I went out on the balcony to smoke and give her a little privacy. I don't know why I didn't like that dude. He never did anything but try to get along with me. But any time she and I went anywhere, he constantly called to make sure she wasn't with another man. Maybe I was just jealous since I recently ended a relationship with my boyfriend of 3 years. When I came back inside she was still giggling and smiling, more relaxed and now laying back on the sofa. "You know I would not cheat on you.. I can just make out the shape of his arse from the reflection in the dark window. She grasps his firm cock at the base and slides her fist up and down his length slowly, still kissing his mouth. His hands are under her skirt again, giving me a view of her butt as he caresses it with her resting one leg up on the seat opposite. He grabs her and pulls her close and I see him slide his cock inside her, thrusting hard as she holds his arse. After a moment she pulls away from him and sits back on.