Love chooses to believe the best about people. It gives them the benefit of the doubt. It refuses to fill in the unknowns with negative assumptions. And when our worst hopes are proven to be true, love makes every effort to deal with them and move forward. As much as possible, love focuses on the positive.
There is an old story from the Eastern tradition that says that when the gods created the universe, they found a place for everything but the truth, and this created a problem, because the gods did not want this wisdom discovered right away. One of the gods suggested the top of the highest mountain, another the farthest star, a third spoke up for the dark side of the moon, and another for the bottom of the deepest ocean. Finally, they decide to place truth inside the human heart. In that way, we would search for it all over the universe, with the secret within us all the time.
Patience gives your spouse permission to be human. It understands that everyone fails. When a mistake is made, it chooses to give them more time that they deserve to correct it. It gives you the ability to hold on during the rough times in your relationship rather than bailing out under the pressure.