Dating jealousy quiz
First, figure out whether he's actually cheating.
If he is, you have a different problem: what to do about your relationship.
Then he attacked his mate, pulling feathers from her wing. And it's true that people who feel inadequate, insecure, or overly dependent tend to be more jealous than others.
If you do it the right way, you will feel the momentum switch back your way. If you want this female friend, it should offend you when she yaps to you about another guy. Then when it feels like it's your turn to talk, you can calmly mention your story. If you are just protecting your balls even with a female you don't even care about. If you want to increase your perceived sexual value in the eyes of a female friend you are interested in. If you want to increase your perceived sexual value in your relationship (often a current girlfriend or wife may mention an ex-boyfriend in an uncomfortable fashion - keep in mind, the energy is the same). You can perform the art of jealousy in both directions.
One reason is because their profile reads like a boring, dating profile shaped turd. I thought I would throw some keywords that would describe what I like to do.