LMAO! Awesome.....
Ive had two experiences with this. I fucked on of my high school friends little sister, and he had no problem with it. (She kinda had a slutty reputation anyway, so it wasnt like he thought she was being corrupted or anything). The other was a little more complicated. I became friends with a girlfriend's younger brother, and about a year after we broke up, I ended up hooking up with him. He was deep in the closet at the time, so she didnt find out. Both were exceptional cocksuckers BTW.