The hills season 3 "They Meet Again"

please iv been looking everywhere for this song.. its when laurens getting out of jasons car right after they got back from Ketchup seeing Heidi and Spencer.. pleasee if anybody knows this song let me know.. thank you!

anybody knows the song from the scene Jason and Laurens met up after the day they had met Spencer and Heidi in Ketchup. And Jason said " nice purse", Laurens was like " from my loser boyfriend" and the song began to play.
It was started with something like " did you miss me much, why you made me wait, .... this is all we've got, baby don't be late..."
Please help, i already checked on this ep list songs but there is none of them!