But unless she went beer for beer with you, I wouldn't blame yourself. I think she may have intended to get you "to drunk to fxck". I've had enough girls drag me out of bars "cave chick" style when they wanted sex to know that if she wanted to take you home or out back or whatever - you'd have been there.... no?

Maybe the hot couple just wanted you two to make out publicly.

Speaking of which... semi-public sex is very high on my hotlist these days.