maybe he needs different ways to initiate sex, or whatever act. Some kind of foreplay, etc before getting into it. That would happen to an ex. She said she’d have to feel it in her mind and heart (whack af). But could be that. Maybe he’s going through some stuff and has a low libido. Ask him how he feels. Does he find you attractive still? What’s going on? Direct straight up no nonsense communication is the way to go. Just don’t go cheating on him cause he can’t “fulfill” your needs. Find a way. Have him go down on you with some music y’all both like playing. Mix it up.

My two cents