(S04E12) "People don't change." -- House, who mentioned it several times.

So Wilson is going out with Cutthroat Bitch (aka: Amber), huh? And, for awhile all is well. That's a pretty good record for Wilson, and devious as hell since he was able to keep it from House for so long. Of course, there is now a challenge for Greg to figure out why Amber seems such a catch for his best friend.

Manipulation? Well, that's a possible answer since Wilson is directly connected to House and can be the avenue to get her a fellowship. Revenge? Certainly, especially the way the good doctor treated Amber during the competition. Actual love and affection for Wilson? Nah, couldn't be! I mean, that would just be ludicrous coming from someone who was only concerned about herself during the game. Come on, doesn't anyone remember when she got all of those candidates to stop washing House's car and walk away from the competition? Plus, according to House, people don't change.