He doesn't want to presume anything, and he already feels like he's pushed it too far. That, given how much he enjoyed their kiss, he's somehow abusing an innocuous human tradition.

"Would... You be comfortable resting like this, with me?"

He's almost meek when he asks, his expression hopeful.

"I thought we could sleep together for a bit. I'm sure the medics won't mind if you're gone for a while--I can take full responsibility for your whereabouts."