Well I usually got their names! ;0)
I think there's a few of us out there who have gone the one night stand route a few times. Personally I tend to think that (although fun in the short term) if you're in a bad frame of mind they can leave you feeling worse/more alone than before, especially if you're using them as a substitute for love.
That said, it's done now, there's no point in beating yourself up about it so move on.