I played it with the song and it sounds ok, enjoy :)
Intro: Em, C, G, D (x4 times its ok, x2 too)
No Capo.

Em
I forgot to wear my cross tonight
G                       D
  I left my garlic at home
Em
It's so dumb but it's so fun
  G                         D
To wander 'round the city alone

C
I'm runnin', fallin' down
G              D
Chase me all around this town
C
And now you've finally got me
             D
What am I to do?

Em
Sexy vampire,
    C
I'm falling in love
        G
So just bite me baby
    D
And drink all my blood, oh yeah

Em
Sexy vampire
    C                       G
I'm falling in love with you
      D
So do what you want to do

Em
Sexy vampire,
    C
I'm falling in love
        G
So just bite me baby
    D
And drink all my blood, oh yeah


Em
Sexy vampire
    C                       G
I'm falling in love with you
           D                         Em...
'Cause you need my plasma more than I.

...C, G, D, Em x4

Em
Hey you wanna stop for a drink or two
    C                 D
And maybe for a disco break. Here
      Em
we'll party all night until the sun comes up
C                                 D
You could say I'm raising the stakes.

C
I'm runnin', fallin' down
G              D
Chase me all around this town
C
And now you've finally got me
       D
What am I to do?

Em
Sexy vampire,
    C
I'm falling in love
        G
So just bite me baby
    D
And drink all my blood, oh yeah


Em
Sexy vampire
    C                       G
I'm falling in love with you
   D
So do what you want to do

Em
Sexy vampire,
    C
I'm falling in love
        G
So just bite me baby
    D
And drink all my blood, oh yeah


Em
Sexy vampire
    C                       G
I'm falling in love with you
           D                         Em...
'Cause you need my plasma more than I.

...C, G, D, Em x4