Oh and never get into fist fights unless they're self defence.
Also, girls DO NOT like people who pick-on or bully others.
I disagree with these two statements.
A) Never get into a fist-fight. Avoid them at all costs, and if it can't be avoided just take just punch to the face. That way you won't get in trouble and s/he will.
B) It depends on the girl. No /respectable/ girl would, but I'm sure some girls do.