“- George Halley: I don't trust any of my friends.
- Panama Smith: The feeling's mutual, George. They don't trust you either.”
Humphrey Bogart - George Hally
Gladys George - Panama Smith

“Another piece of motherly advice. Don't confide in your girlfriends. If you let them advise you, they will see to it, in the name of friendship, that you lose your husband and your home.”

Lucile Watson - Mrs. Morehead

“I have many friends in Casablanca, but somehow, just because you despise me, you are the only one I trust.”

Peter Lorre - Ugarte

“- Maxwell Smart: Guys, you have to believe me I am not a double agent.
- Lloyd: We never thought you were.
- Bruce: Yeah, we love you, man.”
Steve Carrell - Maxwell Smart
Nate Torrence - Lloyd
Masi Oka - Bruce

Lesson learned. No such word as "friend". It can only end badly when you let someone get too close.
Vin Diesel - Riddick