About ten minutes. I was at a Renaissance festival, at the communal campfire. I saw a girl off dancing by herself, and went over to try to talk to her… after a few words, however, she danced away from me. I shrugged, and went back over to my friends.
Just a few minutes later, though- heck, probably only about a minute- she danced up to me and kissed me. Five minutes later, we were heading back to my tent.