If this boy has a girlfriend, you need to respect that he chose her. You can continue to be a good friend to him, but you can save the schemes to make him mad for you until he is single again.
Not unless that was something special you & she did.
It is okay for you to like her, but don't make any moves as this could end with your friend being mad at you, and his girlfriend being even more so!
You can make a boy mad just as you would make a girl mad, or any other person mad. Insulting his mother should work fairly well, as should kicking him in the crotch.
cheat on him
Well if he has a girlfriend and if you are a girl beat up his girlfriend and if you are a guy and you like his girl make out with her.
He should deffenetly be mad and jelious
i am a girl and if i was mad at my boy friend i would want him to be there for me and just let me no that he loves me. You will find there is not much u can do until she forgives you
Run him over.
Only if you want to be his girlfriend. it does if u say yes
Because he has a girlfriend you should flirt but flirt lightly. You don't want to make her mad. Just wait until they break up and then kick it up a couple of notches.
By Not Being Able to Spell Make! -.-
Hit her in the face.