Laguna Beach Season 3 Song

Episode 1:

Can someone PLEASE tell me the name of the song that Alex H. and Alex M. are singing along to in the car? (Alex H. is driving and I think they're on their way to meet Jessica and Taylor for lunch b/c the next scene you see them in is at a restaurant w/Taylor and Jessica) I don't know any "hint" that I can provide other than the word "hello" (or a variation thereof) is repeated several times.

l.o.v.e. by ashlee simpson