House, Season 5

Wilson:
Irene Adler, Christmas, 2001. Sarcoid symptoms, but she didn't respond to methotrexate. I've never seen him so obsessed. He saved her with a last minute granulomatosis with polyangiitis diagnosis, but the hours he put in, I thought it would kill him. And then... well, he fell for her. But, it was too soon after Stacy. It sounds silly, but Irene was the one who got away.

Kutner:
Really?

Wilson:
No, you idiots! House is just screwing with you. You think there's some woman with a mysterious green wrapping paper trademark?

Taub:
Then, how did you guess...

Wilson:
I could be wrong. It's possible a secret admirer gave House the same book I gave him last Christmas, and the same paper I wrapped it in, and the note I wrote.