The Hills - Season 4 Finale

HELP!
It is from the season 4 finale of the Hills (episode 20 I think?).
It's played when Justin and Audrina are in bed, right before the scene of Heidi and Spencer in the courthouse.

NOTE: The song I'm looking for is in the ONLINE VERSION ONLY.

Lyrics go something like:
"Wake me when it's over
I'm no Casanova
All because of us like this"

Plllllllease help - even a hint would help!!!

Anyone?
Are the lyrics I have even right?

I have checked the show credits and other bulletin boards but haven't had any luck....

???