My Boyfriend Is Mad I Posted A Bikini Picture?

So anytime I post revealing pics my bf gets rlly insecure and gets mad at me for it. Today I post a bikini pic w my friend and he said I have no respect for him and that I’m trying to impress other guys. Mean while he likes girls bikini pics on Instagram and I find that disrespectful so I should be aloud to post what I want. But now he’s mad at me for it and says we cant talk or he will say something he’ll regret. What does that mean??? Help! Am I in the wrong? Also we’ve been together a year and a half and I’m almost 17 and he’s 18.