But once I realized that I wanted him back into my life one of my friends suggested that I cut off communication with him (the only communication we have is the fact that we are still facebook friends) to give him a chance to "MISS ME" and to make myself re-desirable to him (Is that the right thing to do).
That's playing head games, dont do it. You will get a reputation for playing head games, because you took some bad advice from a friend, then all the boys will see you as worth nothing more than a one night stand.
The only thing is he just recently started to talk to another girl.
Because you are playing head games. Who can blame him?
Talk to him, tell him the truth, and admit you were wrong to break up with him. But explain WHY you broke up with him (it was the stress from this other guy bad mouthing you.)
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
(Please note, we give the best advice we can based on the information given in a post. For better advice, please include the age of all romantic partners.)