My Therapist: The Holiday.

Explain something:
Why do I keep going after something that I know I don't want?
...and when I give up and stop chasing, it comes back even better than before?

Iris, from The Holiday:
"I happen to know the answer to this. Because you're hoping you're wrong. And every time he does something that tells you he's no good, you ignore it. And every time he comes through and surprises you, he wins you over, and you lose that argument with yourself, that he's not for you."

Yes, exactly.