He guys Both cheated and u used your sister Man U messed up her life too! She was on her back at first when I first slid my dick into her, it felt amazing to me.
My future wife and I shared an apartment with her two roommates.
Think about what happened to her and apologize to her for it.
I think when I move out I man be able to enter a relationship, but I could never bring a girlfriend home and let my parents see it would seem.