like having sex with a dead fish

My husband can be amazing, and most of the time we have great sex.  But when I'm on top, he has this annoying habit of completely relaxing and letting me do all the work.  And I don't mean like just letting me be the one to do the actual sex.  I mean his eyes are closed and he's quiet, not interacting, not touching, not talking, not moving.  I hate it.  It totally turns me off.  I have talked to him about it and he doesn't get why it's a big deal.  I'm like.. do you want to have sex with someone who is turned on?  Do you want me to lay under you completely still, like I'm asleep?  I can't even tell when he cums, he is that non responsive.  That's why it's a big deal.