Sarah Jane: Don’t forget me. The Doctor: Oh, Sarah. Don’t you forget me. Sarah Jane: Bye, Doctor. You know, travel really does broaden the mind. The Doctor: Yes. Until we meet again, Sarah.
The Wedding of Sarah Jane Smith
Sarah Jane: Is this the last time I’m ever going to see you? The Doctor: I don’t know. I hope not. Sarah Jane: Goodbye, Doctor, until the next time. The Doctor: Don’t forget me, Sarah Jane. Sarah Jane: No-one’s ever going to forget you.