My boyfriend and I have known each other for about 4 years (we've been dating on and off for 2) and I've known my AMB (Awesome Male Bestfriend😂) for 5 years (sidebar: they went to the same high school together and were not really the best of friends lol). Here's the problem: Micheal, my boyfriend freaks out anytime I mention David (AMB). Or my phone rings and guess who? It's David. Or I tell him I'm going to lunch or somewhere with David. He makes it such a big deal and tries to instigate some kind of argument. I'm a very chilled person so the most I do is change the subject because realistically, I'm not going to give up my Bestfriend because my boyfriend has a problem with it (he's not my husband yet). What can I do to diffuse the situation? Micheal is the only person who has a problem with me being around David. David doesn't say anything negative or act in a negative way towards Micheal.