I have known my friend for about 17 years. We haven't always seen each other that often, living across town from each other, However I've met all but one of her boyfriends as we've both made the effort to get together for dinner etc.
When I found out I was pregnant 4 years ago I invited her over to dinner to tell her. We also decided to ask her to be a godparent as she had been someone I had known for a long time, with similar values to us etc. Again we asked her personally. Our expectations of godparents wasn't necessarily someone who would look after our children in the event of something terrible happening to either me or DH, but definitely someone who could be there to guide them, and also as a way of saying 'thanks for being a good friend'.
As they've grown older her visits have become more and more sparse, but then I have been also less attentive of many friends (what with having two who only started sleeping through the night when they were 3yrs!). She came to their 3rd birthday gathering in May, and a month later told me that she had met a new man who she was now living with. I was shocked as usually she would tell me updates along the way. I called her over Christmas and left voice mails; she didn't call back but I got a generic 'seasons greetings' text sent to her contacts list. She didn't see our kids, she didn't even send them a card, but by this stage they have no real clue as to who she is.
So I was shocked to say the least when she emailed me at work in January to tell me that she was getting married; that all of the wedding details had been finalised and that she looked forward to introducing me to her fiancé at the wedding. I was so hurt a)to be told by email, b)to have not been involved in the wedding planning and c) if I'm honest to be playing no part in her wedding at all. I've heard every detail of the crap stuff in her life, it would have been nice to have been involved in the happy ending too.
I've decided against having it out with her, and so when we met up recently (my suggestion) I just played it cool. The only thing she said in defence of her actions was that she had wanted to tell me personally but as I did not go out with her when invited (I was too knackered) she had no choice but to email. I have mixed feelings about going to the wedding and feel damned if I do/damned if I don't. It will seriously be like seeing a stranger getting married, rather than one of my oldest friends. On the hand not going may send a bit of a clearer message about how really hurt I am by all of this.
Lots more info I could add, but would be grateful for opinions on whether I should go or not.