Sex advice, please help!! 😫

My boyfriend and I have been dating for 8 months, and we’ve had sex the entire relationship. Everything in our relationship is amazing, I really think I’ve found the man I want to spend the rest if my life with. But during sex I can’t seem to get wet. He said it doesn’t bother him but I’ve noticed our sex life has declined so much that we haven’t had sex in about three weeks. I’m starting to wonder if he doesn’t find me attractive anymore. Is there anything I can do?