[Sort of smiles and frowns at the same time, head tilting a little further with more genuine thought] So you want to...steal my clothes, then? Not better.

[She straightens again, dissolving into giggles and relents, no longer teasing him. Much.]

Okay, so you're too old to offend, sexually speaking...but seriously. You have to admit that line was pretty damn creepy. Next time, if you're really just looking at clothes? Open with 'where do you shop?' or something. Far more benign.