A "Morning After" Conversation with my 2nd Ex:
Me: "Who's cock were you sucking?"
K: "I sucked several ... which guy are you talking about?"
Me: "When I was passing through Judy's office to get to the bathroom I saw you blowing a guy on the couch."
K: "Oh, he was some guy, I don't know who he was."
Me: "'Some guy?'"
K: "Yeah, I got out of the shower, and he was sitting on the couch, on a towel, and didn't look like he was having a good time. So, I sat down next to him and asked him how he was enjoying the party, and he made a face. I didn't want him to have a sucky time, so I started touching his cock and he got hard. So, I leaned in and gave him a blowjob until I sucked him off. He came. lot. Why do you ask?"