Her DD is 10, my DS is 6. We have begun discussing a possibility in the future of living together. I've always found her DD tough but over the past 6 months it's become too much. Especially when she gets with my DS.
Part of the problem I've come to realise is my DP not bringing her up on her attitude and rudeness. She overpowers my DD and when he asks her to stop she doesn't. I end up stepping in and saying something but DP doesn't. She's extremely manipulative, when my DP has told her off she then either says she hates her or that she doesn't want to be here anymore (this isn't the case whenever she isn't being told off and it stops when DP cuddles her after)
Finding it tough to play games as a 4. If she wins she jumps up and down literally screaming she has won repeatedly which upsets DS but he doesn't say anything. If she loses she stamps her feet and sulks and refuses to join in.
She bosses DS. I know this is normal but it's extreme. DP has actually told her not to. She sulks about fairness which I try and do for both of them but I find DP undermines and let's her DD have whatever or do whatever but if it was the other way my DP was get annoyed.
My and DP get on just fine but when we are all together EOW I dread it. Its so stressful and I feel sorry for DS.
How do I discuss this with DP without he'll breaking lose. I really don't want to live together but feel that is going to be the end of our relationship. Just for context we are a same set couple and primary caregivers.