Me and DP have a DD, he also has a DD with his ex. Me and the ex don't get along, she's always bitching and blaming me for everything. I think DP has a weird relationship with his ex, when we first met she was always calling and messaging him, when she brought their DD round she also stayed for hours, they would go for coffee etc. I didn't meet DD until a year and a half into our relationship and even then she looked for any chance she could to stop her coming. Now DP goes out to take his DD places, never invites us. He has previously gone for coffee or gone round his ex house and says it's for his DD. There's been many occasions where I feel like the line has been crossed with respect for me, a big one is when she bitches to him about me calling me all sorts, he never sticks up for me just ignores her. The most recent occasion they were at an appointment and then the ex gave DP a lift, just the two of them no DD, he also didn't mention this to me I told I asked him and says he wasn't hiding it but it wasn't relevant to tell me, I kicked off but he says I'm off my head and controlling. AIBU to expect respect and to maintain boundaries?