Ah. Of course. I'm unsure of how that possibly slipped my mind.

(When she pulls away he looks down for a moment before moving to grab his suit jacket. To ask her out or not to ask her out, that is the question?) You know...this tie may come untied somewhere between dinner and dessert and if it did, well, I would be stuck. Would you like to join me? Just, in case the tie becomes undone...(Not the best date request but if she happens to say no, at least it was casual.)