Be Myself. There's nothing worse than a OMG! OMG! OMG! Fan, who is breathing heavy, and jumping up and down screaming. I wouldn't want him to think of me as some over zealous fan, so I'd prefer to win a date, by being the "normal one".
I wouldn't do much. I think it would ruin the illusion that the person is the most most perfect man in the world, and I like things they way they are for now.