How can I boost my sex drive

I never really want to have sex. Maybe like once a month. I have a boyfriend I feel bad because I never want to. Of course I do it anyway & try my best to act interested but it's just annoy to be as in to it as him.

Don't get me wrong, I'm very attracted to his body. & he is very good in bed. He pays so much attention to me and my responses. He honestly just want to please me but I need to start paying more sexual attention to him because I can tell he needs/wants/deserves it.

So how can I boost my sex drive?