Fringe, Season 3

Peter:
Olivia? Are you okay? What is it?

Olivia:
You know what Barrett said? He said that he looked in her eyes and he knew it wasn't her.

Peter:
Olivia...

Olivia:
I understand the facts. I know that she had rims of information about me; about my life and about people who were close to me. And I understand if she stepped off, she would have a perfectly reasonable explanation for it. And I guess to expect you to have seen past that, perhaps is asking a little too much. When I was there, I thought about you. I knew you were just a figment of my imagination. I held on to you. It wasn't reasonable and it wasn't logical, but I did it. So, why didn't you? She wasn't me. How could you not see that? Now she's everywhere. She's in my house, my job, my bed, and I don't want to wear my clothes anymore, and I don't want to live in my apartment, and I don't want to be with you. She's taken everything.

Peter:
I'm sorry.