All I Need

Human nature is a funny thing
 You been out there all these years
 No explaining 'bout this chemistry
 As I wipe away these tears
 I been staking out your neighborhood
 And my eyes are open wide
 You're All I Need, my little heart is aching
 You're all I see, don't let my heart keep breaking
 I been trying to make you notice me
 But you'd think I wasn't there
 I been saving my best jokes for you
 As if you could really care
 I been leaning on my sanity
 But it's time to let it go
 You're All I Need, my little heart is aching
 You're all I see, don't let my heart keep breaking
 I been staking out your neighborhood
 You can always count on me
 You're All I Need, my little heart is aching
 You're all I see, don't let my heart keep breaking