"For many, the benefits of being in a new relationship outweigh the costs." "What is the right amount of time to start a new romantic relationship after a breakup? There are popular ‘rules’ about how long to wait. One rule of thumb is that you’ll need to wait half the length of the previous relationship." Claudia Brumbaugh writing in Aeon magazine, explains the evidence showing that why dating on the rebound can help someone in both the short and long term.