DICK MOVE ALERT!! 🚨 🚨

So on Sunday, I went to the beach with my boyfriend, my best friend and her boyfriend too. Anyway, when we were walking back, my boyfriend and my best friends boyfriend needed to meet a dealer cos they wanted a joint. My boyfriend and I were walking infront and then he told me to walk behind him because it would “make him look bad” if his dealer saw him with me??? My friend and her boyfriend were still holding hands when they saw the dealer so it didn’t seem like a problem to them. 99.9% of the time, my boyfriend is really good to me but I was so pissed off and he didn’t see it as a big deal, HE DIDNT EVEN APOLOGISE!! How do I approach this with him??