Relationship falling apart

My relationship is a total mess all because of his parents! I love him so much but I honestly can’t put into words how much I hate his parents. I have my reasons but I’m not going into it otherwise this post would be too long.

I get absolutely no respect or privacy from them. We have a 9 week old daughter together. They’re not the type of people that my daughter would be missing out if she didn’t know them.

Every time I see them or know I’m going to see them it makes me in a crazy bad mood and my partner and I usually end of fighting after they leave.

I want to be with him and be happy together but I wish i would never have to see either of them ever again.

I honestly feel like the only way our relationship will get better is if I have nothing to do with them or I could pretend they don’t exist! This is out of the question though, and of course I don’t want to put him in that position of giving him an ultimatum - to make matters worse he works with them as part of the family business.

He knows I don’t like his parents but I don’t think he realises to what extent.

Has anyone ever been in a similar situation? How did you or would you handle it?