A slightly longer exchange than usual for this thread, but it WILL give it away if you've seen the movie:
"Oh no you don't! Osgood, I'm gonna level with you. We can't get married at all."
"Why not?"
"Well, in the first place, I'm not a natural blonde."
"Doesn't matter."
"I smoke! I smoke all the time!"
"I don't care."
"Well, I have a terrible past. For three years now, I've been living with a saxophone player."
"I forgive you."
"I can never have children!"
"We can adopt some."
"But you don't understand, Osgood! Ohh... I'm a man!"
"Nobody's perfect!"
George