Ahem, fernandolopes; the correct English is "if I were a girl" [subjunctive, contrary to fact].
As far as an answer to Slaygat, the correct approach is, "Heyyy, babee! Wanting to have sexytime with me?"
The beautiful girl will then hit you with a heavy object.
You will wake up in the hospital, where, with luck, an attractive nurse will attend to you.
You can then lie, and say that you were attacked while protecting your grandmother from bandits.
She will admire your heroism and courage, and you will have made good progress with a pretty girl.