<human>: Ok ok, so I know the title kind of throws this off a little bit.

My boyfriend and I have been together for a while and we're pretty happy thus far. However, he has this psycho ex that he's friends with on facebook.

He's fully admitted and been very honest that he does not like this person at all. However, she keeps posting shit on his wall and some of it I see. I know why she does it, she does it to piss me off and it works pretty well, but I bite my tongue.

He deletes it when he can but some of the stuff I still see. It's been going on for a while now and it's making me very upset. I know that I can be a jealous person, but he absolutely refuses to delete her from facebook saying it will only cause more problems. 

My boyfriend wants me to move in with him but I'm having some trust issues here, is it so wrong of me to ask him to delete this nosy bitch? Well I have, and he won't. I don't know what to do.

Can you summarize the given text in a few sentences?
<bot>: Boyfriend stays friends on FB with his ex, who keeps posting naughty stuff on his wall. He knows it upsets me but will not unfriend her or get rid of her even though he openly talks shit about her