Nora Ephron said this quote

People always say that once it goes away, you forget the pain. It’s a cliché of childbirth: you forget the pain. I don’t happen to agree. I remember the pain. What you really forget is love. Divorce seems as if it will last forever, and then suddenly, one day, your children grow up, move out, and make lives for themselves, and except for an occasional flare, you have no contact at all with your ex-husband. The divorce has lasted way longer than the marriage, but finally it’s over.