Am i overreacting because my boyfriend's friend made a comment?

I (27F) hang out with my boyfriend (23M) and his two male friends. I was wearing a low cut top. We were drinking in the flat. I was talking with one of my boyfriend's friend ( lets call him A). Friend A said he hated himself, thinks he is a bad guy, thats why he was looking to lose weight. I said if it helps, I think he is a good guy. Friend A got pretty upset, say I shouldnt say it because then he wont lose his weight, and got up. Then some time after getting up he loudly stated that my boobs are about to fall out from top. Me, bf and his other friend- everyone could hear. I was wearing a low-cut top yes, but it wasn't falling out. My boyfriend thinks its because he was very drunk and he got up and the view from the top made my breasts look like they were falling out probably, so it was a bad drunk decision from his friends part. My boyfriend was very drunk so he doesn't remember it. But he said his friend had no malicious intentions, which i do believe. He's a drunk guy who doesnt know how to talk to a woman. My bf believes intent is the most important thing. But at that moment, i dont know, i felt very small and vulnerable. I cant explain it to my boyfriend. I feel he thinks i am overreacting and it was just an awkward moment, his friend had no ill intent. My boyfriend thinks am taking it personally. I know he thinks I am making a big deal about nothing. My boyfriend, so far has been supportive about most things i could ask for. Thing is, i cant shake this off, it was not just an awkward moment for me, i cant pinpoint it, I just felt so small? The friend made a comment about my body.I cant find the right words to show how I feel, but I know it was not just a random awkward thing. I just cant explain how I feel to my boyfriend. Am i overreacting? Am i making a big deal out of nothing? I just wanted to get some women's perspective.