Dexter and Rita in “Circle of Friends”

When'd you first notice it? This darkness inside the guy you fell for?

Well, I always knew it was there. I guess I just didn't think I deserved better – until I met you.

I have a dark side, too. [Rita laughs] What? I do.

Somehow, I doubt that. You have a good heart, Dexter. You're not like Paul; you don't hurt people.

[another pause] Innocent people. I don't hurt innocent people.