I have been with my boyfriend for 5 months. We are very happy together and we got serious quite quickly, we have talked about marriage. I have never felt this way about someone and he says he feels the same way. The issue is that he still keeps in touch with one of his exes. I wouldn't mind too much but she was very significant to him and he speaks of her fondly and I feel a little jealous. She usually contacts him he doesn't really contact her. I am sure she is a nice person and I know that it is a positive thing that he they have remained friends but I really don't like it. I don't know how to feel better about this. Any advice would be appreciated