For the chorus where it moves up half a step, its easier just to play bar chords 
and move up a fret every time it repeats.

Intro:
C Dm7 Am7 F x2

Bring the beat in!
          C
Honey, honey
               Dm7                    Am7
I can see the stars all the way from here
                  F                   C
Can't you see the glow on the window pane?
               Dm7                   Am7
I can feel the sun whenever you're near
               F                      
Every time you touch me I just melt away
    F                          G                      Em
Now everybody asks me why I'm smiling out from ear to ear
(They say love hurts)
       Am7
But I know
(It's gonna take a little work)
F                                     G                          Em
Nothing's perfect, but it's worth it after fighting through my fears
                Am7
And finally you put me first

CHORUS:
           C
Baby it's you.
                  Dm7
You're the one I love.
                  Am7
You're the one I need.
                       F
You're the only one I see.
                   C
Come on baby it's you.
                               Dm7
You're the one that gives your all.
                             Am7
You're the one I can always call.
                                  F
When I need you make everything stop.
                            C
Finally you put my love on top.
              Dm7
Ooo! Come on Baby.
                   Am7                  F
You put my love on top, top, top, top, top.
                    C
You put my love on top.
                 Dm7
Ooo Ooo! Come on baby.
                   Am7                  F
You put my love on top, top, top, top, top.

Baby Baby
I can hear the wind whipping past my face
As we dance the night away
Boy your lips taste like a night of champagne
As I kiss you again and again and again and again
Now everybody asks me why I'm smiling out from ear to ear.
(They say love hurts)
But I know
(It's gonna take a little work)
Nothing's perfect, but it's worth it after fighting through my fears
And finally you put me first

Baby it's you.
You're the one I love.
You're the one I need.
You're the only one I see.
Come on baby it's you.
You're the one that gives your all.
You're the one I can always call.
When I need you make everything stop.
Finally you put my love on top.

Ooo! Baby.
You put my love on top, top, top, top, top.
You put my love on top.
Ooo Ooo! Come on baby.
You put my love on top, top, top, top, top.
Put My love on top.

Baby it's you.
You're the one I love.
You're the one I need.
You're the only thing I see.
Come on baby it's you.
You're the one that gives your all.
You're the one that always calls.
When I need you baby everything stops.
Finally you put my love on top.

x4 moving up a semi-tone each time.