Hi, first timer here so be gentle!
Some background. I separated from my (now X) H four years ago (EA, mild compared to the other stories I've read on here but I'd reached the point of no return and decided I had to get out). We moved into separate houses three years ago, divorced this year. We do a 50/50 split with our DS and DD which is working very well, they are well-adjusted and very happy.
I met and started seeing my new DP just over three years ago. He is everything my XH wasn't, caring, considerate etc. I took it very slow though and he only met my children during the last year and still doesn't stay over at my house very often when they are here. We do plan a future together though, dream of buying a nice house together in the country one day!
My parents have met him and get on well, they can see how happy I am with him and that makes them happy. The problem is my brother. He's never seen why I left my XH, thinks I'm being stupid and cannot understand how I didn't just carry on putting up with it 'for the sake of the children'. Despite them not being close while I was married my B invites my XH to parties, Boxing Day dinner, his children's birthday's etc. At first I ignored it and thought he was taking some time to adjust but this year it's come to a head.
My B refused to come to my birthday dinner because he 'wasn't ready' to meet my DP. We had words about that. Then a few months later he invited my XH to a party at his house, we had another argument about that where he refused to see why I was upset. He also admitted he had no interest in ever meeting my DP and was going to continue to invite my XH because 'we've always invited him'.
He also has the cheek to complain to my Mum that I don't talk to him at family gatherings and I leave as soon as I can if he's there!!!
I have heard rumours that he's thinking of a NYE party, no doubt he will invite me but on the condition I come with only my DS/DD. I'm not prepared to dump my DP to spend NYE on his own so won't go, my children will miss out on the party though so AIBU?
Sorry it's so long!