So, both me and my boyfriend got out of relationships where we had bad breakups. His was a suprise to him as he thought they were going to get married, were best friends and then out of the blue she tells him she hadn't loved him for years, etc... When she is out of the picture he is fine and seems to be moving on, however when she contacts him it seems to bring up the past and make him go back and forth between missing her and hating her.

We have been together about 6 months now and I know he really does care about me and want to move on, my question is can he? I'm trying to figure out if i'm overreacting to the situation because of my own bad experience or if I should run for the hills. My instincts are to stay, give him time, and hope things work out...but I need objective opinions. Thanks!