back stabbers..

That's really a tough question to answer. Friends usually backbite if they are jealous about something or if they feel that someone has something they don't deserve. That's what i think. Friends usually never think much but they generally care to think after backstabbing. Then if they understand they repent else they continue what they were doing. That's really something hard to take back. Cheers!

I think friends back stab when they feel jealous of you in any way that can be in studies, about girls or any other things

Back stabbing a friend can be caused for so many different reasons. Often this begins as jealousy. jealousy can turn to bitterness and rage. hate may even be a factor. Before you know it, you have stabbed a good friend in the back.