I hooked up with my friend's ex girlfriend, a girl he is still stuck on after breaking up over a year ago. The night she came over she told him she was going to a barbecue. The next morning he came over to go fishing with my roommate. While he was sitting downstairs waiting to leave, I went down on this girl for a good hour with her moaning and trying to stuff a pillow over her face so he wouldn't hear. Then I went downstairs to check if he was still there. He was, so I bull-shitted with him for a few minutes, scanned downstairs for any of her clothes or her phone, went back upstairs, took my clothes off, and got back to business.
I don't feel bad at all--he is a mean drunk who treats her like shit, and she is one hell of a crazy bitch...that and she is way hot