"That's usually what I think of you, yes," he can't always manage sexy, but he can always manage sweet and he looks up at Viktor for a moment instead of in the mirror, before Viktor's turning his gaze back. He seems both settled by the reassurance and unsettled, and Viktor knows him well enough to watch his expression change in the mirror to the one he wears when he's about to do something really difficult for him.

Deep breaths, Yuuri. Doing this was not part of the plan, but it's important and you can change the plan. It's better than the plan, if you can just not fuck it up and chicken out.

"Can... Can I... Will you..." neither thing seems right, and he has to remind himself air is a thing halfway through, the blush creeping up his cheeks and a little tremble starting up. He closes his eyes, takes another breath, and then forces a little bit of steel in his spine, undetectable except that Viktor has his arms around him and knows his body better than most people know another's, even lovers. He wouldn't be able to meet his eyes normally, but he manages to do it in the mirror,

"I want it."