"By staying in touch with your ex, you have one foot in and one foot out. It's not fair to the new person you might start dating when your excess baggage comes along on a date," says Spira. 20 Shocking Breakup Statistics
Johnson compares dating to clothes shopping. "You're not committed to everything you try on," she says. "The whole point of trying things on is to test them out before you commit. If they don't fit, you simply move on something else—you don't need to keep giving it chances to fit or trying to make it work."
More from YourTango: Why Getting Dumped Was The Best Thing That Ever Happened To Me
8. To come out the other side better than you were before the relationship.
Although you might start new hobbies or activities to get over your ex, you'll find after awhile that you've learned to enjoy those things for their inherent value. In letting go of your ex, you've acquired a new passion. You're no longer who you were in the relationship, so why let it hold you back?
"Many great authors, entrepreneurs, and activists discovered their passions in life through hard times, including break-ups," says Tardy. "Think of this as an opportunity to 'do it better' next time."
More from YourTango: Contest: Tell Us The Best Way To Avoid Ex Sex—In 10 Words Or Less
No relationship is a waste of time—ever—no matter how it ends," says Johnson. "Every union is an opportunity to experience love, grow as a person, and learn things you'll use to improve future relationships. Keeping in touch after a break up has nothing at all to do with any of those things."