i love m friend but why they're traitor??

There are many people who are coward enough in terms of confrontation. Some of them are lacking of logic on how they would explain their point. Some of them tend to use you if they just need you.

Don't waste your time on these kinds of people. Most of the time, the people who try to put you down do that because they either want to be above you or are jealous of what you are and what you have. Just be yourself and stay true to your ownself and the right people will come to you. ;)

For many people it's hard to be an individual. They feel weak and can only feel safe and strong if they belong to a group. This is partly character, partly caused by the way they are raised (no self esteem) and culture. To some stabbing others in the back, being a traitor etc, even to their best friends, is the only way to feel popular. But sooner or later they will find out they are alone. Why? Because nobody will like them, nobody will trust them. So they will end up as the most scared and lonely people in the world. Jealousy/envy is a bad thing, stay away of that friend. It's not a friend, not worth you love him unless he/she loves you and is loyal to you too. This person has to prove that too. So you are warned. And you know what they say about a warned person!