Wilson heads to House's office and gives him the news about the donation, saying he's doing it because Tucker is his friend. House says he's Wilson's friend, too, so when he no doubt needs a liver (and that will be soon, considering how much abuse House has given his liver), he'll be expecting Wilson to give him some, too. "I'm not here for an argument," Wilson says. "No, right, that's room 12A," House says, because now is a great time for a Monty Python reference. What Wilson is there for is to invite House to be there for him when he has the operation House doesn't want him to have. House refuses. "Why?" Wilson asks, shocked. "Because if you die, I'm alone," House says. Well, as long as it's about you, House.
And so, Wilson changes into a surgical gown and gets on the gurney as Tucker is wheeled in. "Thanks, Jim," he says. Wilson smiles and seems to think he made the right decision. Hopefully he chose a real surgeon to do the transplant and not Chase. Because that would be the wrong decision. As the anesthesiologist puts Wilson under, he looks up to the OR balcony and sees House is there for him after all. Probably more to make sure they don't screw up than to make Wilson feel better, but still.
And House is waiting at Wilson's bedside in the recovery room when he wakes up. And then keeping him company and laughing and joking with him as he gets better. Although I'm not sure if the laughing is a good idea, given how Wilson suddenly grimaces and touches his stitches.
Wilson wheels into Tucker's room and finds him packing up to go to a rehab facility. Tucker acknowledges that Wilson saved his life, and then tells him that he's back with Ashley again. You see, "Melissa's great in a crisis, but the person you want when you're dying isn't the same as the person you want when you're living," Tucker explains. Um, well, actually I'm pretty sure it is for most people, but I guess that's because most people aren't callous assholes. Wilson makes a face like "I'm so glad I gave one of my four precious liver lobes to this guy." Ashley walks in and says "hi, Jim." "Actually, it's James," Wilson says. And now Tucker and Ashley can wonder why Wilson took five years to tell them that. Anyway, I hope Melissa isn't too upset. No doubt Tucker will be getting cancer again soon after that double chemo dose and then he'll come running back to her.