I think he wants you to initiate sex sometimes and not just leave it up to him. Also tell him occasionally "your hot/fit/sexy, love your ass, cant wait to get you home" etc. Sometimes its good to stroke his ego and make sure your initiating affection too-plenty of cuddles and kisses are always good to keep you close.. And sometimes he needs to be able to let his softer side out. The ability to feel vulnerable with you and still feel like a man is what sets you apart from his male friends.
Good luck
"Don't ask a question if you can't handle the answer".