Apologies if this is long, it could be an AIBU, but I feel it's more complicated than that and I'm quite upset. I am a fairly regular poster, but NC'd not long ago. Just need to vent about this!
One of my oldest friends recently came out of a long relationship and went on her first date at the weekend. While she and her date were having a drink in a bar she suddenly had a tap on her shoulder - it was my ExH, who I divorced several years ago and haven't really been in touch with since. The first thing ExH said was "Where's X [name of ex boyfriend]?". My friend said they'd broken up, but apparently it was a bit awkward with her new date sitting right there next to her! My ExH then sat down uninvited and launched into a monologue about how hard his life had been after I left, everything he'd been doing since then, and how he was feeling much better now. He also asked a few questions about me. He didn't acknowledge my friend's date, or ask her anything about herself. He then said he was meeting people and left. In all, he was sat there talking for about 10 minutes or more.
I guess my first question is AIBU to think this is quite rude behaviour? Surely it would be polite to say hello, how are you? etc. then move on, not totally gate crash a couple on a date and drone on about yourself?
For background, and to avoid drip-feed, I was married to his man for a few years, no DC, and I left him when his controlling behaviour became too much. Over the past year I have been having some therapy and realised that he is a classic narcissist, self-obsessed, controlling and lacking any self-awareness. It's made me re-evaluate a lot of things that happened throughout our relationship, so I think I'm a bit vulnerable at the moment.
One of the things ExH used to do when we were together was criticise my social conduct. "Why did you say/do that?" "Make sure you behave appropriately" "You were too loud/quiet, it was embarrassing!" You get the picture! For the record, I am not socially awkward or unaware. I have many lovely friends who enjoy my company and don't find me embarrassing. But this man made me doubt myself. I constantly had to check what I was saying before I said it and would often be quite anxious that I'd said/done the wrong thing. I'm not usually a special snowflake, but for ExH to behave (IMO) so rudely to my dear friend and show a total lack of social awareness is making me quite angry and upset, especially after the turmoil he put me through with his criticism of my behaviour. My friend made light of it, said that the date wasn't going quite as well as she'd hoped anyway, and it was just a slightly funny, if awkward, incident. But I can't shake it off so easily.
So really my second question is AIBU to feel like this regarding this incident? Is there anyone else who has experienced a sort of delayed anger/upset following the realisation that someone in their life is a narcissist? I would really appreciate any thoughts as there's no one in RL who I can talk to about this in any depth.