After abreak up, try to improve yourself, through your appearance, clothes or attitude. This will greatly improve your self-esteem but also your desirability. Get involved in your hobbies and passions, meet your friends and socialize with other people. Simply put, make your life richer and more fulfilling, and this will in return increase your appeal.
When you feel better and some time has passed, you may try to contact your ex again. However, be careful and go slowly. Remember that he/she is not your boyfriend/girlfriend anymore. Do not ask for a date at once, but rather try a short call to know how he/she is doing. Hopefully, if you waited long enough, your call will be appreciated, and may even be a relief.
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