I have really bad trust issues, think its due to past relationships, I haven't been in a relationship where the other person hasn't cheated on me and lied This means that I just cant trust my current boyfriend and its causing loads of issues between us His closest friend is a girl and cos of my jealousy I cant cope with them spending time together which means she hates me, which leads to loads of arguments between the three of us Is there away to stop my jealousy or at least make it bearable?
Jealousy is a perfectly normal human emotion that shouldn't be fought, in my opinion. Instead of fearing it and fighting it, learn to accept it. Communicate with your boyfriend about how you're feeling, and what he can do to help.
But the only thing I feel I can do to stop the jealousy is make him cut all contact with her which isn't realistic nor fair for anyone involved
I don't think you should trust him with her, even if they say they're only friends. I say break up over it and see what happens. I know that sounds over the top but at least you won't be jealous.