Hi, I've been currently seeing my partner for just over 6 months, he has 2 children aged 7 and 10 ,with his ex who has BPD. He's scared of telling her about me incase she stops him from seeing the kids. I am his first relationship in 5 years since they split. He stays at mine Monday to Thursday then he has his kids Friday to Sunday. I'm starting to feel like it's an affair, because his ex doesn't know and the kids dont know about me, if she rings and he's with me I stay silent because 'I don't exist' I understand why he's scared I really do but I want us to have a normal relationship (well as normal as it can be) where I'm not being hidden . I know this relationship will never be easy but she has been with some else for 3 years, I'm finding it really hard as i feel like the other woman.
I concur with FD, it's unlikely his ex can
legally bar him from contact over the fact that he has a new GF. That's just not something that's in any divorce decree I've ever seen or heard of. It's pretty normal to assume that each partner will date and meet someone new and that's the way it goes.
Now, his ex might try to do something like that, but it's up to him to fight it, and stand up for himself, and if he has to go back to court, then so be it. Can't be afraid to fight for yourself.
I have seen - and this was present in my own temp orders during my divorce - a "morality clause" that each parent can't have a member of the opposite sex sleep over on a night they have the kids. This is ridiculous for many reasons, but BPDxw insisted on it. And it was ironic, that at the same time she was sending me messages saying that if I have someone new, I'll should let her meet them before I introduce them to kids and she'd do the same for me...
while she already had a guy living in her house, with no notice to me, in violation of the morality clause she insisted on for both of us! So he needs to learn not to put any stock in threats she makes or things she claims. pwBPD lie through their teeth, and deny it even when they're caught red-handed.
It sounds like he needs to learn to stand up for himself - he should be here, not you - but like Notwendy said, it's still a little soon after divorce to judge him so harshly and sometimes it takes a little while to get used to a new normal.