Good point, Juju. Neither part is innocent. I don't get it.
LH, if you aren't married, everything is free game? I may not get married again, but if I am in a committed relationship, I don't think everything is free game or morally correct.
Oh, and my exH was my friend's boyfriend. I was 19 and I live with guilt to this day, although 20 years later, me and her are still good friends. It's not something I would ever do again or be able to live with again.
I hooked up a few times with a coworker back in the day. He had this one and off girlfriend I never met. I admit, in the middle of hooking up, I actually stopped and asked if he was still with his girlfriend. He said yes and game was over. It's just something morally I would never want to be in the middle. It's basically messed up my life and other people's lives and it is always best to stay out of other people's relationships. Married or not married.