Sorry for a long message!
My 3.5yr long relationship is under a lot of stress because my boyfriend feels like I don’t accept his 17yr old daughter. I myself have never had kids of my own (Im 26, my bf 56). I don’t feel like I can be her stepmom and this “modern family” is not something I ever thought of (when I met him first time his kid lived with her mum in another country so I wasn’t worried, however soon after she decided she wants to be with dad). He had to spend a lot of the time with his daughter due to his horrific divorce, and later support her when she moved to another school (she’s in boarding now). So from the beginning I felt I’m a second priority in his life as his daughter needed a lot of support and divorce took most of his time and attention (we had to have a long distance relationship due to these issues).
Im quite young, we met when I was 23, so whenever I had shown my upset about the fact that we don’t spend time together (whole summer he didn’t leave her alone for even one night), he would get really upset with me. Even though I have grown a lot in the past 3yrs, I still sometimes feel resentment and upset. So the other day when he was speaking to her on the phone it bugged me but I didn’t say anything and I don’t usually, I’m always nice to her, buy her bday/xmas presents etc (and I understand it’s not a healthy reaction and I’ve asked my bf for more time to figure it out), but he got really upset saying I still can’t accept his daughter. It’s day 6 and we still don’t talk..
He always adds that he has a great relationship with my family (I also have a great relationship with his parents, but I guess that doesn’t matter to him).
Please AITA?