Ok..
This might be a long one so bare with me please. Partner and I been together 3 years. I have a 9 year old daughter, he has a 5 year old son, we have another child due in a weeks time...
We effectively have shared care of our "other" children (we have my daughter 4 days a week, and his son 10 days out of 21). However we have my daughter every other weekend, but his son 2 out of 3. This means that during term time (in my opinion), we have less quality time with my daughter. When the holidays come round, we continue with the weekend arrangement for his son, but have him alternate weeks. My daughter is with us for 3 solid weeks now and then with her Dad for a week and then here in the week, but with her Dad for the weekends... Told you it was a long one.
Anyway, during term time we try to limit weekends activities to when we have both children as we just can't afford to do things all the time.
However, every now and again (maybe 3 times a year) we try to have a special day for each of them when they have our undivided attention without the other sibling's involvement... For example, we took my daughter ot a pottery painting cafe - her step brother is too young to appreciate the joy in taking his time to make something beautiful.
So around 3 months ago, my partner suggested taking SS to see secret life of pets at the cinema (which my daughter would have enjoyed) on his weekend. Not one of the special weekends. I said I thought it would be better to do it the following weekend when we had both kids. He agreed. Nothing more was said.
This week SS has been taken on holiday with his Mum, step-sister and grandparents. He'll be spoiled rotten with attention and have an all round lovely time. My daughter isn't having a holiday this year, so I thought it'd be nice to do some fun things at the same time so she doesn't feel like she's got a bum deal... So far we've been on late night walks, made dessert for dinner, cooked and baked together and watched movies. It's been great. Now we've been invited to the cinema on Tuesday to watch Toy Story 4 with friends, which I agreed to. DP flipped his shit and said I had double standards as he "wasn't allowed" to take DSS to cinema when DD was at her Dad's for the weekend.
I've argued that it's not the same as she wasn't there doing anything special and that DSS will not be missing out as he's on holiday this week.
Tell me AIBU? I want to punch his face right now, which is wholly unreasonable, but is the whole cinema thing?