"And I'd do anythin' for you. M'completely yours, darlin'."

The close proximity of their bodies, plus the earlier 'wrestling match' in the snow outside, is giving Doc motivation to 'convince her' to get rid of that towel so he can show her just how much he loves her.

But he won't, not now.

I'm not going to screw this up.

"Completely," he kisses her again. "Yours."