FFS, if you want to leave him because you're picking his kids up for him when he's not there, then that is HIM coming between you, not HER!!!
If his shifts mean he can't see his kids, two options:
- Change his work patterns
- Change his access patterns
Otherwise, he's not a great father, is he?
It's one thing in an established relationship to pick the kids up because it's easier for you than him and he's back shortly after. (though I say established - sounds like you've been running around after him well before moving in, if you've just done that). It's another thing for you to be doing 4-6 hours of childcare.
He needs to sort out actually spending time with his own kids.
Her weirdness doesn't matter. She can't control anything.
You see topless picture of him? You pity her privately for not moving on.
She is over friendly? Just rebuff. Ignore texts that aren't specific arrangements.
If she tells you stuff about him, say "you know what? I don't like you saying negative things about my partner, so don't please
"
(I had the do that with BIL's ex, about BIL)
Yes, she's got a reaction. But it's a reaction that STOPS it. If she persists, don't respond to it and possibly smile sweetly one day and say you're sorry she's having trouble moving on.
Just cut the contact.
She sounds difficult, but you sound over sensitive if I'm brutally honest. All this "she has kids with him I don't" stuff.
You know what? I have a child with my ex. There'll always be that link. It's not an emotional link! Just a practical one. It need not threaten any future partner - I wouldn't touch him with a flipping long barge pole, ever. As long as you believe your partner feels the same, why are you worried about her?
Your boyfriend is the problem here. He needs to step up and spend time with his kids.