I've been in a relationship with a woman for almost 18 months. We've both been in really badly abusive relationships before and I think we both have issues around trust, boundaries etc. It's a first same sex relationship for both of us. She's really really paranoid that something is going on between me and my ex (couldn't be further from the truth). I love her and would never cheat on her with anyone. She gets annoyed because he comes to my house to see our DC's, his apartment isn't suitable, I don't let them go there and he agrees with this. I wouldn't even say me and him are friends, we're civil for the kids and that's it. But she's after starting another argument over it and I don't know what I can do to reassure her any more. I really don't want to lose her but I feel I'm constantly defending myself against something that's not even real.