If you take a long time to find "The One," you will face a number of relationships that will all be puzzles. Many of them will give you pieces to a larger puzzle that is discovering your ability to love. Some will give you nothing.
Lastly, you must know this or suffer. You contribute to every puzzle's problem, and in some way, shape, or form, you are part of the puzzle. The most critical thing to realize is that sometimes your only contribution to the puzzle is your presence, and the only solution to the puzzle is your departure. therefore, you must know when to say goodbye.
Failing to say goodbye is choosing to suffer the consequences of derailing each other's destiny, and postponing your own fate and happiness.