This is quite trivial compared on this board. I used to be really close friends with X but over the past year or so, for reasons X has never explained to me, X has decided that she no longer wants to be friends anymore. When i see her sometimes she can be polite and chatty and other times she is downright rude, i never know which it's going to be but she has made it very clear that we are no longer friends.
I am also friends with Y but not as close as X is with her. I've never discussed the breakdown of my friendship with Y as I don't have a problem with X, only her with me. Tonight Y has invited me out for a Christmas drink with her, X and Z (who I vaguely know). This is my only chance to see Y before Jan. Part of me wants to go, as I'd like to see Y but X, Y and Z regularly socialise as a 3 so I feel like I'd be some sort of spare part or intruding on their evening. i have self-esteem issues anyway so sometimes feel like I'm not good enough to spend time with groups of people who are better friends with each other than they are with me. Often i can just brazen this out and once i get somewhere I'm ok but tonight I'm really not sure whether to turn up or not. Should i go and ignore the fact that X doesn't like me, or should i stay home and arrange to catch up with Y in the new year?