Most Helpful Guy
Most Helpful Girl
Because he has difficulty letting go. Nurses his wounds, engages in retaliation. It takes two to tango. So disengage, ignore, ice out, don't take the bait until he decides he can't manipulate a response out of you. If he manipulates others into asking you questions or engaging you on the topic don't defend yourself, just state "I've moved on. I don't talk about that anymore".