Hard to believe...

Once I read something saying that love happens twice in your life...
Hard to understand and see when love is there.
What to do when noticing only when it's gone?
What is there to learn after all?
Are we here to go thru love like that?
Are we assuming love is there where it never showed up, just for the sake of not feeling sorry for living a loveless life?
Are we believing too much?
Twice?