You don’t. Be glad that he finds you compellingly attractive. I have heard many people (men and women) complain about the opposite situation.
Try talking to him. Relationships are made up of 2 equal parts. He is making himself very clear, it is time you do the same. You can never be too young or too early into a relationship to learn the fine art of communication.
Yeah drachillix, don’t you know not to pry into her life? How dare you ask her about sex? Now just sit tight and let’s resume. Where were we? Oh yes, she was telling us about her periods and her horny boyfriend.