Be strong

If you really wish to get back with your ex girl-friend or boy-friend, try to avoid being needy and weak before him/her. Don't beg her or ask for pity; you need love, not pity or sympathy. Don't constantly message her or call her a lot; it will show you as a desperate person; girls do not need weak guys.

Contact her/him very little, and be short and precise during your conversation; control your emotions, and let her feel you are OK without her and can be happy on your own.