Is this more than you bargained for yet Oh don't mind me I'm

Is this more than you bargained for yet
Oh don't mind me I'm watching you two from the closet
Wishing to be the friction in your jeans
Isn't it messed up how I'm just dying to be him
I'm just a notch in your bedpost
But you're just a line in a song

Fall Out Boy
-Sugar We're Going Down