My boyfriend of a year has a couple of friends who are ex’s. I’ve never been a fan of the idea but learnt to accept it. He’s getting a new nice flat and asked me if he should tell me who he invites over. And I thought that was a bizarre statement until he mentioned his ex coming to stay when she sees him. They sometimes meet in london and go out drinking and for dinner but I feel I need to draw the line at her coming for a sleepover. she’d sleep in a separate bed obviously but I don’t feel comfortable at all about this and I’ve said how I feel but he doesn’t agree with my opinion and thinks it would be silly and “odd” to make her pay for a hotel. I trust him but I just find it very disrespectful to me and he thinks I’m crazy for hating the idea so much. What would you do in that situation?