Throwaway account because don't want to be doxxed for posting here.

I've been a long time lurker and agree with most of the stuff here. Recently left my gf of over a year and have been focusing on myself. I recently was contacted by an ex gf who still seemed interested in me. Being the idiot I am I allowed her to keep in contact with me and even met up with her once or twice. Made it clear this wasn't going to be going anywhere and was just looking for sex.

We were talking recently via text messages and she sent me a screenshot of something on her phone. She forgot however to close out the message bubble of a dudes face I've seen before. Looked the guy up and sure enough girl is leeching off his life living with him and dating the guy. Immediately cut all contact but I feel like an idiot for giving her any time in the first place. AWALT. Good reminder.

Currently torn on if I should tell this guy about what happened or not. Like I said previously I recognized the guy and he and I have some bad blood in the past so not sure what to do. Any advice welcome.