Kunikida is too correct, so much so that even now, although you've been together for a long time, you haven't done anything intimate before, so now you're like this.

"S-sorry, I think I should be on the other side"

He tries to be on top of you but without sticking his body to yours, he doesn't want to make you feel uncomfortable.

"Oh, sorry, maybe it would be better if you settled in first. You can tell me if you need anything else."