[M4F] - What if I'm banging your sister?

How would you feel when you found out? Betrayed? Would you be mad at her or mad at me - or both?

There have to be a couple of you out there who would be turned on by it. It's a wild kind of cuck thing, right? Your own sister fucking your man?

I really, really want to chat with a woman who is into being THAT girl. The one who finds out who her man has on the side.

Or for those of you who like the other side? How would that work for you as the side piece? The cake?