Why not?

You shrug your shoulders, unsure of the whole "wearing panties" thing, but more than willing to spend time with this sexy looking girl.

"Awesome!" She says, grabbing you by the arm and walking towards the exit.

You're surprised she's standing so close, literally holding your arm as the two of you walk out, considering the fact that she has a boyfriend...

You ask her about it, unsure of her intentions...