backstabber

I've been intended to learn more about what the word 'backstabber' really means and how to deal with it, because in reality you can't refuse backstabber, it comes by itself to even your closest friends, you can't get your life without any of it.
because when there are lovers, here they made itself, HATERS too, believe it or not, reality check

from UrbanDictionary

Backstabber-
1. Some one that you have grown to be really close friends with, but then they go and go behind your back and betray you.
2. A person who betrays a freind, like when Brutus stabbed Ceasar
3. Someone who pretends to be your friend; but talks shit about you to other people

How to deal with it
It's never easy to change someone personality, I got this tips from wikihow.com to deal with this kind of person

# Get away from these people as soon as possible and convince others not to associate with them. Just say that 'they aren't the best person to hang out with.' Take care if you choose to do that.

# Don't hesitate to ask questions. If somebody seems shady in any perspective, ask them about it but pay close attention to their answers. More often than not, they will try to pull one over you.

# There is a difference between friends and acquaintances. This means that even though he might be fun to talk at in classroom or at lunch, he might not be the kind of person you would like to hang out with after school.

# Don't rely on the backstabber for anything; even the tiniest of things. In this way, you will avoid situations where you owe him/her a favor. This technique takes patience, practice and goes completely against your better nature. The backstabber will get the hint and move on the next victim.

# Also do not tell them any secret that you want kept hidden, as they will tell it to another one of their "friends" the moment it will gain them something.

# Treat him/her like you would any other snake. Be polite when in his/her area but keep to the path, and maintain your distance.

# Make sure not to reduce to his level by saying untrue and bad things about him behind his back (this is a huge no-no!) as it will only spur him to action against you.

# Try to avoid revenge. This will create more problems. But if you simply have to get even, remember that the best revenge in this case would be hanging out with your best friends right in front of their face

After all, it's all about how you want to be treated by other people,
treat other's like the way you want to be treated, I do believe that karma does exist.
Forgive and forget, the best solution on every little problems you have,
get rid of those backstabber, forgive them cause life goes on, and there's many more advanture yet to come, and it must be more than to deal with these kind of, who they called to be 'FRIEND'