I split up with ExDP a little while ago now. The relationship ended for several reasons, but mainly due to the fact that we were increasingly living separate lives and had lost any emotional closeness.
One of my best friends came to stay with me recently and we were talking about my ex relationship. She then said that she hadn't wanted to tell me at the time, but a year or so before he and I split up, when we were all out for my birthday, he had followed her to the bar and started complimenting her in quite an inappropriate way. She said as they were then walking up the stairs back to where I and her DP were sitting he jumped in front of her in order to block her way and said something along the lines of "how is a woman as amazing as you even real" which she just awkwardly brushed off and walked around him and carried on up the stairs.
Obviously I feel really pissed off with him even though we have now split up so it doesn't really make any difference to anything, and I'm not going to bother confronting him with it because we're not even in touch now anyway.
But I can't help but feel a little bit annoyed with her that she didn't tell me at the time, because he and I were having problems for quite a while and if I had found out about that I probably would've ended the relationship sooner than I did.
I'm also not the kind of person who would get annoyed with the messenger, she knows me well enough to know that I wouldn't have been annoyed with her for telling me, as I'm quite a straightforward person who appreciates the truth even if it's hard to take.
She didn't seem to see that telling me would upset me in any way and I just kind changed the subject as I didn't want her to know that I was as upset as I was.
AIBU to be annoyed with her for this?