My soon to be ex and I are going through a divorce. I am very bitter over the home wrecking girlfriend he now has. We have a few grandchildren. One is turning 2 in a couple weeks and my daughter just informed the party is at their house cause it is bigger than mine and that his girlfriend is invited. Now most of my family does not want to go because it is just uncomfortable. I understand she was going to be around sooner or later but I feel she could at least do it at a neutral place but my feelings are just totally disregarded. Am I being selfish and stupid?

You are not selfish at all. It is absurd that anyone would be so disrespectful enough to not wait for the divorce to finalize before bringing around that other person. Your family should not go in support of you and because it is completely disrespectful to them to be put in such an uncomfortable place. People have no problem saying no at so many other things, and this is a moral ground that they need to all be respectful of this horrible time your going through. There is absolutely no reason that two parties can not happen or have him set this one out if he can’t be decent. Last, selfish is always associated with negativity but it is also in us to protect us & that is completely ok in this situation. I’m sure you’d be ok with him there w/o her even though I know it would still hurt you so much, but to have the catalyst there! That’s just messed up & I hope you put your foot down.
Most sincerely on your side,
HB