First of all, how old are you both and how long have you been together? Next, when he says you’re “not doing anything” is this something new he’s said to you? Have things ever been good in bed between the two of you? Is this complaint of his something new? Third, is there something specific he’d like you to be doing that you’re not?
If you answer these questions and fill me in, I’ll be able to help you more! 😀