While it would be certainly more practical, a hospital gown would just remind him of the strangeness of the situation and make it weirder, so honestly it's for the best. Now he can just pretend they're in some sort of (very sterile) hotel room. And that for some reason they only got a single bed.

He mirrors her movements, his hand moving down to her ass as well, though he keeps his hand on the outside of her clothes as he pulls her closer. He's not going to be able to take quite as a proactive role as he usually enjoys, given there's a limit to how much he can safely move around, but that's alright.