Description
By chance, I found out what my sister was doing with our father (we are half-siblings), she was fucking him and getting everything she wanted from him. That wasn't fair, because she was able to get more from him than I. So I also found out she was fucking her mother's husband for the same reason, the twist is that our that and her mom's husband can't stand each other, they really hate each other (I think it's because of her mother), none of them knows she's fucking both, except I. So besides the sharing of the goods she gets from both, I also demanded she open her legs for me. Both conditions were easily accepted by her.
