Thanks for all the opinions, guys. I know most of you believe one shouldn't be friends with an ex, but I'm going to have go against the majority and say that I'm still going to be friends with my ex. There is absolutely nothing sexual there and I think my boyfriend is slowly starting to understand that. In fact, he's realizing that his jealousy is something that has permeated all of his past relationships (regardless of whether his ex-girlfriends had exes around or not) and that it's more an issue of his own insecurity and his limiting beliefs about girl/guy relationships. If not dealt with now, he'll carry it on to the next relationship. Relationships are built on trust. I only see my ex about 3 times a months compared to the five days a week I spend with my boyfriend, and I rarely, if ever, spend time alone with my ex - we have many mutual friends and tend to hang out in large groups doing very active, athletic activities. Giving up the friendship with my ex and not spending time with him means not spending time with a group of people I've been close to for the last 12 years of my life. I am very devoted and loving with my boyfriend, and when we talk about it, he KNOWS he is the most important person in my life. It's just a gut reaction that is triggered under certain situations.
Thanks so much for the few responses who were a little more open-minded about the situation. We're going for counselling to help figure out what his triggers are and he's going alone as well to work on his own issues. I wanted to say, however, that when you love someone, you don't just break up because there's a difference of opinion about something. Maybe you do if you don't really care about the other person or you're too stubborn to look inside yourself and see what you can do to help make things better. Often, there is a compromise that can be reached, and each person does have to take responsibility for their role in the relationship. I'm NOT responsible for managing jealousy that's unwarranted. I AM responsible for making him feel loved and important and making him my number one priority. I'm also responsible for making sure I'm trustworthy, which I am. My boyfriend and I are well on our way to making this work after a lot of discussions and hearing each other out.
And for the record, I have had boyfriends in the past who were friends were their exes. I made a point to get to know them because they were important to my boyfriend at the time, and although we never became very good friends, it wasn't an issue worth ending the relationship over.