I’m so insecure

My boyfriend is a total breast guy while I have pretty small breasts. When he watches porn he looks at big tits and I feel so depressed. I don’t want to stop him with what he enjoys but I feel so envious because although I know he finds me attractive I am not “the sexy” person that he might sexually desire. We have never had an issue with our sex life regarding me not being attractive but it hurts so much when I see the stuff he watches or just even knowing he is a breast guy while I have A/B breasts :( does anybody have any tips on how to A. Deal with this B. Get over it

Please be nice in the comments. I am asking for actual support and answers. If you talk like an ass you won’t be helping me. I really do appreciate it