My boysfriend ex girlfriend keeps calling him to get back with him. Should I worry?

yes. Usually exes don't call if they are sure the relationship is over, if they don't have kids and the ex is calling that means its not clear to her that its over. If all else fails beat her ***.

A relationship has to be built on trust. If he does go back to her, she isn't the problem...he is. He needs to decide who he wants to be with, and you should encourage him to be honest with you and himself. Nothing worse than being with someone who is cheating on you behind your back because they can't make up their minds, and you are too weak to deal with the truth.

You cannot hold onto a man with a leash. You have to be able to let go. I've been married ten years, and there are times when you're in a long-term relationship when you have to be apart for business or whatever, so you HAVE to trust them to do the right thing.

Has he given you a reason not to trust him? Ask him straight up how he feels about her, and tell you him you expect him to make a choice and if he's with you, then he needs to cut ties with her, but it's his choice. And be ready in case he does choose her.

Not really unless you think he wants her. Just tell him how you feel and that should end it. If not...then dump him.

just answer his phone and snap on that bi***