It hard to let go of someone. You've been good too. Who you've gave your all too? It's hard. But it's not uncommon.
Those that have departed a good thing. Seems to be living regrets on certain days. Either their next love didn't do what you've done. Or they forget that love is a hurting thing. But it's not uncommon. To see them begging for a second chance.
No, it's not uncommon. As long as you're aware you gave all you could.