Boyfriend has made me insecure about my boobs, what should I do?

I haven’t always liked my boobs (36DD) my boyfriend always seemed like he loved them, but i’ve noticed in the last few weeks he has said certain things about them. I was wearing a white t shirt (no bra) and he was like damn ones lower than the other (talking about my nipples) i kinda walked away and let it slide. Then tonight my friends and i were having a conversation about boobs and one of my friends asked like joking “i must have pretty nice ones ay” and my boyfriend literally in front of everyone said “one’s lower than the other but yeah they’re fine” like my heart sank… i know my boobs are big and it took me years to kind of be okay with them but yet he says things like that…. i’ve been quiet ever since and he keeps asking me what’s wrong but i don’t wanna talk about it…

Boyfriend has made me insecure about my boobs, what should I do?
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