What to do when her friends get in the way...?

I think you really have to get a grip on what influence you have over this Ex of yours. You're at different schools, leading very different lives now and with different friends. For good or for bad she's goign to need to live life up. I didnt say sleep around, but she's going to try new things and hopefully she'll be a better person because of it.

If this really bothers you take alook at yourself and dig deep as to why you want what you want. I've let a relationship end because that is what was best for her. We didnt talk for 8-9 months and then boom she starts calling me again wondering what I've been up to. Just let it roll dude and dont try to control things outside of your control. Her friends will only ever see you as the bf trying to control her life from far away. They have more influence on her now then you do so let her make her own choices and try to move on.