Does he do it to you? If not, tell him to so you will know. There's an insane amount of nerve endings there and can bring pleasure and stimulation to another level for both of you.
I finally went for it last fall with my wife. Right after she bathed. I think she was a bit surprised but definitely enjoyed it. I know she'd be uptight if she wasn't fully clean. I've only done it a few times so far. Next time I need to spend a significant longer time down there.
The greatest thing is the smell of a woman’s pussy when she’s ready horny!! And the smell of her underpants after being in them all day