me and my boyfriend are getting married. We have been togeth...

me and my boyfriend are getting married. We have been together almost a year. But we have one major problem that keeps coming up. HIS EX!! They broke up about 3 months before we statred dating. They dated for about a year and a half and he said he never loved her. The probelm is his family. They shut me out the first time i meet him because of her. His sister is friends with her and inviated me and her to his nephews bday party. I didnt end up going but it caused alot of problems and he and his ex started a facebook message war. But we all moved on from it. On the 4th of july his sister almost called me by her name. And because his mom and sister are friends with her on facebook she pops up as a friend i might know and she is all over his sisters facebook wall. I'm very sick of dealing with this problem and almost left my soon to be husband over it. It seems like her name is always brought up around me. I'm at a lost of words with what to do?? I need some help/advice on what to do. I'm a very quite person and i take things to heart so this is killing me inside. And i dont really feel like my boyfriend has my back on it either.

What has he said/done regarding your concerns about his ex and her influence on your family?