Alright, seeing as there have already been some spoilers, I'm going to try to add my two cents....
SPOILERS SPOILERS SPOILERS
Please don't read this if you haven't seen the season 5 finale yet!
The last episode was all a hallucination. Well, mostly. He's making up the parts with Cuddy, because that's what he wishes was happening. When he and Wilson are talking earlier in the finale, Wilson suggests to House that he (House) is substituting Cuddy for Vicodin. That's what seems to be going on. House's brain is quite literally swapping Vicodin for Cuddy. (Or her lipstick. That's why the lack of smudging is significant. His brain made it up without knowing what she used, and guessed that her lipstick wasn't sealed. In real life, she used smudge-free lipstick. Clue to the insanity to come, courtesy of Shore and the writers.)
So: House didn't sleep with Cuddy. His brain made it up. That's why Cuddy was so confused at the end. She couldn't understand why he was acting out, because she didn't know what he was thinking. At the end, House realized that he was losing his mind. (Yes, quite possibly the Vicodin there.) Wilson saw them and figured out that something was up. One can assume that the full story came out. At the end of the episode, House is seen going into a psychiatric hospital. This is almost definitely voluntary - the man can't tell fantasy from reality anymore.
I hope this helps a bit. =] It's as clear as I can be, because I'm still freaking out over the sudden reappearance of Amber and Kutner. (OMG unexpected!!!)
Seaon 5 Finale - "House Divided?"
· 1 decade ago