Phoebe: I couldn't kill him, Leo…All I know is that I loved Cole. And if anyone understands forbidden love it's you, isn't it?
Leo: Oh my God, Phoebe, it's not even close to being the same thing. He is a demon.
Phoebe: He's half-human.
Leo: For God's sakes, he's a killer. He has killed witches and innocents and anything else that has gotten in his way. What is the matter with you? What makes you think that he's not going to come back here right now and try and kill all three of you?
Phoebe: He won't. I know he's good.
Leo: No, you hope that he's good.