SB- im sorry sweetie, thats not fun at all.
I'm in a similar situation with my ex.. and I've just figured he's gonna do what he's gonna do. If he wants to keep me in his life, thats awesome. We were best friends and I would've liked to keep it that way, but I just want him to be happy living his life, and if that doesnt't include me, then so be it. I still love him but theres a bigger part of me that knows I'm better off without him.
Just the way I see it.
Good luck! I hope ya feel better.