Sex drive

I've been with my boyfriend for a year now, and we live together. You'd think I'd have him in the bedroom constantly..but my sex drive just isn't like his anymore. When we first got together sexually we would always when we saw each other. But I just haven't wanted to as much these past months? He's insecure about my sexual attraction to him. I want to give him the affection and love in the sexual sense that he wants!! What can I do? My relationship isn't at stake, but we all know sex is kind of important after you've been sexually active in your relationship.