Song when heidi is leaving in the Uhaul truck

It's the song when heidi is driving off with spencer(ew) in the Uhaul truck somthing like i miss you...I dont know. If anyone has any guesses please post them!!kthnx

yeh i was soo wrong i don't know i thought that was the song at the end when Heidi is leaving but it's not .... but does anyone know the song when heidi is going to meet Spencer at the apartment its like...
i i know what I'm doing don't tell me I'm losing myself in (something) for
someone else.
i i know what im saying and im tired of playing these games over and over
and again.

It's called "When You're Gone" by Avril Lavigne