Castle, Season 4

Castle:
I can tell you this: Any relationship that lasts longer than a breath mint is gonna have challenges, but if a relationship doesn't work out, it's usually not because of the challenges, it's usually because the relationship wasn't strong enough to begin with. Does this help?

Alexis:
Not really. (Snuggles close to Castle) But this always does.

Castle:
I promise you this: if two people believe in something, really believe, anything even the impossible, is possible.