What's this song?

[scoobysoo]

I keep hearing a song on the radio that I like but have never hear the artist or tiltle mentioned. It's starts "On Monday, I am waiting, Tuesday I am fading..." Then the chorus goes something like " Oooooh....finally rest my head on something real, I love the way it feels, oooooh...something about you knew me more than I ever knew myself, I love something, pieces, pieces of me"

 

Please help!!!!

[lats]

ashlee simpson - pieces of me