I'm pretty sure I'm not but, as usual, it's often useful to get an outside perspective on things.
Bit of background, my brother has been with his wife for 20 years and married for 12. I was married previously and we divorced 11 years ago. I decided not to have a serious relationship while my children were young and so, whilst I dated a bit here and there, no one was ever introduced to my family. My brother told me that, essentially, I'd had my chance at marriage, blown it (my exh had an affair) and that he would ever meet or allow any other man into his or his family's life.
I've now been in a relationship for over 2 years with someone I've known a long time as friends before. My brother has met him a few times, and they get on well. We moved in together a few weeks ago so this is a serious relationship and not a boyfriend I'm casually dating.
He sees himself as the arbiter of family life. We haven't seen them since last Christmas despite living less than an hour away because its difficult to pin my brother down to a commitment - he tends to see us when he doesn't have anything better to do so arrangements often get cancelled last minute. We were due to visit and stay over at theirs over the summer. When I messaged the day before to check it was still on, he told me they were cancelling it.
Anyway, he decided 2 days ago that we should all meet this weekend. Not hugely convenient for me for a few reasons but if we don't, it'll be one afternoon the week before Christmas (as usual) before we see them again.
So we said yes. To me, my (adult) children and my partner meeting him, his wife and daughter tomorrow.
He messaged again this morning to say that his wife wouldn't be coming now and it would just be him and his daughter. I know him well enough to know that, in his head, this is now not a him and his family + me and mine but brother and sister and our respective children. He's shifted the goalposts. He hasn't said this but he's been my brother for nearly 50 years. I know how his mind works. It's implied not explicitly stated
I replied said we'd miss her but me, my partner and children were looking forward to seeing him and my niece.
He read the message 6 hours ago and hasn't acknowledged it.
I know that this is now because he is pissed off that my partner (who he likes) will be coming too when, in his head, partners are now no longer participating because his wife isn't.
I want my partner there because we'd planned to spend tomorrow together before this suggestion and my kids want him there because they like him. I can't imagine my niece will care either way. So it's only him.
I just get a little bit irritated that my brother feels he sets the tone and nature of every time we get together. If his wife wants to join us, my partner is included. If she doesn't, he isn't.
It's not reasonable to expect me to invite/uninvite my partner based on what my sister in law wants to do, is it?