Catch him on film. Use you camcorder make a movie of him and the reaction of those that are around when he's acting a jerk. let him see it. If you are embarassed to be with him just tell him when he grows up give you a call.
Your best friend might be dating a jerk because they dont like you anymore, try asking your friend to spend more time with you
You cannot convince another person to give up their lovers, unfortunately. The best you can do is to be sure she notices him being a jerk. Anything that you do or say to try to turn her against him is going to backfire and make her mad at you.
Try to convince yourself he's not worth it. Find someone new.
You should tell her the truth. Make sure to give her examples like what he does to be a jerk and make sure to put something in like if you were my friend you would believe me. This is also a great way to make sure your friend trusts you. Another answer would be to make sure it's not jealousy , that you see that person as a jerk, the possibility that you think you might lose your friend to the person, could possibly make you see them as a jerk.
You can either do everything you can to convince her that she would be better without him without her knowing that's what you are doing, OR find a girl that is smart enough not to be dating the "stoner jerk" in the first place.
well if your boyfriend is a jerk to you in anyway hes already a bad one in my opinion so go for your best friend... hint that you like him/her just a little like scenting the water... see how they react
all's fair in love and war, sounds like both.....
Dress up as Kankuro and convince a friend to be a puppet
Be the good friend you are and tell her your honest feelings about this guy, but don't be surprised that she defends him and won't listen to you. Most people in love refuse to believe the worst about the one they love so she is going to have to learn the hard way. Just be there as a friend to pick her up when she has the 'great fall.'
If your friend acts like a jerk when your around other people then people will tell you that he or she is trying to impress you. This could be true, but they are saying that to make you feel better. Other reasons are that he is uncomfortable and trying to impress them or he is feeling insecure.
Tell them all the stuff you like about them. Try to get other people to tell them that to.
go out with some one else