Self confidence

I have always been self conscious about my body. My bf tells me he loves my body and is constantly rubbing my belly. He thinks my belly is “cute” and told me “it’s a part of you and I like you”. My boyfriend is way more in shape then I am and I have a hard time believing that he likes my body.

I feel very awkward when he looks at my naked body, even though he tells me how beautiful I am when he does.

Is there a way to help boost my confidence around him?

(Heres a picture of me so you get an idea of my body type & ignore my messy bathroom lol)