Upset Boyfriend Help

Shandi
My boyfriend and my best friend are best friends...now that I'm back with my boyfriend they don't hangout much anymore and he's upset about that... I want them to hangout so then he will stop being upset and I told them they should make plans but they won't...anyways he takes it out on me when I hangout with her because he wanted to hang with her. It's all a mess and messing with my head..I can't do this..how do I cheer him up