Nudes

Okay y'all so I'm in a Long Distance Relationship and my SO has never seen me in person since we've only been dating a few months, but he wants me to send him pictures of my boobs. I'm not okay with my body and he knows that but keeps asking every once in a while. I know he loves my body for my body but I don't. I've never sent anybody anything like that. My boobs aren't big and look terrible compared to my stomach. But when I don't give him anything he whines and I feel terrible. Advice?