[ That she's so much shorter than him is endearing more than anything. It makes him feel like maybe he could actually protect her if need be, even though he knows she's more than capable of taking care of herself. Considering his past history with women, feeling like they might not die on his watch is a big deal.
He's a little shy, a little awkward when he reaches for her hand. Okay. Dancing. Not a big deal. He danced at JJ's wedding. ]