Sittin' Up In My Room
Brandy
Album: WAITING TO EXHALE soundtrack

Seems like ever since, the first day we met
There is no one else, I think of more than you
Can't seem to forget, can't get you out my head
Guess the verdict's in, I'm crazy over you

1-How can one be down, tell me where to start
  'Cause everytime you smile
  I feel tremors in my heart
  I have but one concern, how can I get with you
  Til my day comes, here's what, I'm gonna do

2-Be sittin' up in my room
  Back here thinkin' bout you
  I must confess, I'm a mess for you
  Be sittin' up in my room
  Back here thinkin' bout you
  I'm just a mess, with a thing for you

Pray that you'll invest, in my happiness
All it takes is just, one simple call from you
Turn my heart around, if I'm making ground
Pretty baby please, tell me if I'm getting through

Tell me what is up, you see I need to know
Tell me if I'm far or, if I'm getting close
I have but one concern, and that one concern is you
Til I'm with you, here's what I'm gonna do
(repeat 2, 1, 2...)

Source: CC from David Letterman (January 23)