It wouldn't bother me. [Literally or figuratively. So there's no hesitation to pull her in, one hand on her waist (even he's impressed with how casual he makes it look) and one hand holding hers, curled against his shoulder.]
[He's done this once or twice, and though he doesn't follow any prescribed steps he's good on his feet -- all that sword training -- and a strong lead.] You look really nice, by the way. [And now he's blushing a bit, even if he doesn't avert his eyes as he usually might.]