Don't act in front of him/her if they don't like you for who you are then why should you care for them?
just be confident
Looking cute would make your crush likely realize your interested in them. If your crush is shy, he will be embarrased. Otherwise, go for it.
in front of your parent and or in front of your crush or x crush.
Kiss him violently in front of the girl he fancies :P
depends on the crush, i mean whats their social status compared to you. Then you can either be a jerk, sensitive douche, a funny guy, etc
Just apologise and laugh it off. Make a joke out of it if you can.
embarrass them back in front of who they like and then do nice things for your crush then give them a valentine's card
I think you should say you love her back
Farting in front of your crush
Mis for misbehave
just write about why you should behave.
You should behave like YOU, but do be loving and charming