Perhaps you keep still love your ex, but in his heart there is no longer a similar light feelings towards you. In such a situation, of course, should not be imposed, try to let him go. As you know, the best cure for unrequited love is new love. Therefore, do not turn in on themselves, be sure to get acquainted with other men interested in them. Because somewhere in the world is the very prince of the cherished dreams, who will be able to make you happy. But if you do not look for it, you run the risk of never meet him.
Also download yourself study, work, creative activity. Try to have had as little time on the sad and negative thoughts. If you find it difficult to enter yourself into a groove, spend more time with his family and best friends. Visit places of interest, party, drive into the countryside. Begin to play sports, such as swimming or fitness. Also, you can find yourself a pet that will not let you get bored. If things are really quite bad, contact a professional psychologist, who will try to help you get rid of tormenting thoughts.