You are right, in a way I do resent not being invited. It is just another one in a long line of, what I feel, are let downs. While the FIL party isn't really a major issue, it is just has made me feel like the downhill of the rollercoaster ride somehow. Throughout this whole separation experience I have been blamed for everything by everyone. I see what happened to the husband of the SIL, happening to me. Complete loss of care, concern and love. The family simply swept him under the carpet and moved on. Yes I do understand why I wasn't invited, fully. And yes I did send him a birthday card. Still don't know whether he got it or not. I am trying my best to focus on me, certainly a hard thing to do when a big issue in the marriage was my selfishness.
ME:51 W:46 M:25 S:22, S:20 Divorced 16/9/15 BD 10/12 W left 12/12 with OW, affair confirmed Nov/12. Dark since 6/13 I"m in a new relationship since Feb 14.