X-friend and boyfriend problems. Need help!!?

Let's call her Jane. Jane was like a twin to me. Doing EVERYTHING together. But when I got my boyfriend she'll get mad at me and yell "PDA!" and other crap. Well later on I'll be walking down the hall talking with my bf and she'll come up inbetween us and say things like "Gross" "Don't PDA" Me and my bf don't kiss at all, yet. Well even more latly she's been ignoring me and a few other of my friends are too. I talked with Shel about this (we're not fighting) and she's glad that me and Jane are no longer friends. I'm kinda glad to but the problem is her friends are my boyfriend's as well. I want to sit with him but Jane's all ways there. I want to sit with my friends but I also want to sit with JJ (boyfriend) and I feel akward taking him away from his guy friend when he doesn't know my girl friends. The only time I see him is at lunch and all this ness is going on. What do I do?