what is the song

What is the song that is playing in the last few minutes of the show "The Hills". it is the part when Jen just finished talking to lauren about there friendship. Jen is walking down the hallway.
"The Hills" is on MTV on monday nights at 10:00 the episode that I am talking about is the most resent episode I need to know the song PLEASE!! I want the title and the artist.
the episode that the song is in, is called "Apology Not Accepted" this episode is lauren's 21st birthday and the episode that Hiedi tells lauren about spencer asking her to move in with him. Jen is in the episode because she wanted to patch thinks up with lauren as I said before. Jen goes to Hiedi's work to talk to her about lauren and what is wrong with her but Hiedi tells her to go talk to lauren. The song is at the very end of this episode as I said before PLEASE CAN SOMEONE tell me the name of the song and the person how sings it.