Cheaters all around.

I really don't understand why on earth someone will cheat just to get the phone number of another person. It's already not easy to build the trust among us in our society nowadays. Yet, there are still so many cheaters around to lie to their friends, even in a very small matter. I'm really so pissed off!! Do I really need to build a wall between friendship? I was just purely trusted a friend, who sounded so sincere and honest. Who knows, this will only end up with all the disappointment. :(