My DP and I have been together 2 years, living together (he moved into mine) since earlier this year. DP has two DDs and I don't have any children, unless you count a furbaby!
Ever since we have got together my DP will have his DDs whenever he is not working and as he does shift work this is 3 days out of every week and it can be any three days... weekends, weekdays, etc. It constantly changes. I WFH running my own business, which at times is stressful. Since the DDs have got older, they tend to spend more time with friends/clubs etc and it has become more sporadic as to when they come over, but I will have no clue when they are coming over as DP never let's me know.
To some extent it doesn't matter and for the most part I just remain flexible. But there are occasions when it bugs me, because life has been really hectic, I've barely had a break recently, plus I am recovering from a major op and sometimes I just want a tiny bit of space. So it would just be cool to be given the heads up.... not asked, just some forewarning about plans. I've been used to my own space and as much as I respect he has DDs (and they're great kids) it would be nice if he took into account that maybe I need time on occasion where something isn't going on.
The biggest issue is, when DP is at work, I am juggling chores, a business, a puppy, etc. Which means from 6:30 to 9/10pm I don't stop. Last week I was walking 2.5miles per day without leaving the house. When he is here I am usually catching up on work but I also try to get some time off to spend with him because we rarely get the weekends with his shift work.
Also, for the past few months we've been using my car a lot for various reasons. We brought a new one and it's had to go back to the garage - annoying. But DP has then made arrangements with the DDs to drop them off places and again, doesn't let me know he's taking my car until he's basically going. He does fill the tank back up, but he cannot see why he should give me some forewarning.
So aibu? He gets so offended when I mention anything, we just had yet another argument over this, but I just have this constant feeling I'm to just fit in around what he is doing?