He settles a pillow under his hips to make things a bit easier for him before running his free hand down his thigh.

"God, you've got gorgeous legs."

It's a bit of a non-sequitur, and nothing he'd think to bring up normally, but right now he just wants to appreciate every inch of his partner's body. When they're both comfortable, he presses a finger inside him slowly, drawing the sensation out as much as he can.