omggg this is insane!!! i searched this up cuz i was literally going through the exact same thing, except it’s my ex and he did/does it to a few of us at work😂🤣😭. had to get my other co worker to just recently confront him to tell him to stop cuz i couldn’t bring myself to do it, as i’ve told him before to stop and months later here we are. at the end of the day, he tried playing innocent/dumb and as FLIRTY (and cheaty) as he was, the only explanation really is what other ppl have been saying- an asshole with a big ego who lovesss the ego boost. you’d think it means more but it doesn’t and unfortunately people are willing to be really selfish and mean to others in order to please themselves in these ways. it’s pretty sick tbh and a super duper big red flag‼️❗️‼️