Dr. Mark Greene: [chasing after Lewis' train, shouting] Susan! Susan! Susan!
Dr. Susan Lewis: Mark!... My God, are you okay? You came to say goodbye?
Dr. Mark Greene: No... stay. I want you to stay.
Dr. Susan Lewis: But, Mark, I...
Dr. Mark Greene: I love you. And I'm stupid for not saying it before.
Dr. Susan Lewis: No, it's OK. I knew. In a way I knew.
Dr. Mark Greene: We belong together. Tell me you don't feel the same.
Dr. Susan Lewis: I'm sorry.
Dr. Mark Greene: We're right together.
Dr. Susan Lewis: Mark, you are my best friend in the whole world, I don't know how I'm gonna make it without you.
Dr. Mark Greene: Don't go!
Dr. Susan Lewis: I have to. I don't belong here any more, I have a new life, it's going in a different direction.
Dr. Mark Greene: Susan... I don't wanna lose you!
[they kiss and Lewis boards the train]
Dr. Susan Lewis: I'll never forget you.
[as the train pulls away]
Dr. Susan Lewis: I *do* love you.
Dr. Mark Greene: [can't hear] What?
Dr. Susan Lewis: I love you!