Ending a relationship can be a difficult experience, leaving people with a variety of complex feelings they're unable to fully process during the breakup. After some time has passed, though, people are able to learn from the relationship, and even realize there are things they wish their ex could know.
Actually calling up your ex isn't always the best idea, but venting those thoughts and feelings in some other way can be a positive release. To do this, several people used the Whisper app to anonymously write the things they wish they could say to their exes and the things they've learned after the breakup.
You can read some of their confessions below: