Tried my best to place the chord changes where they occur in the recording but they 
don't always change on a word (sometimes between or after a word). Listen to the recording 
for the best timing between chord changes :)

Intro:
G (320003@1)  C (x32010@1)  D (xx0232@1)  Em7
G (320003@1)  C (x32010@1)  D (xx0232@1)  Em7

G (320003@1)            C(add2)   DThere's (xx0232@1)a boy      I know
               G (320003@1)       C(add2)   DHe's (xx0232@1)the one I dream of
        G (320003@1) C(add2)  DLooks (xx0232@1)into        my eyes
                G (320003@1)         C(add2)   DTakes (xx0232@1)me to the clouds above
       G (320003@1)     C(add2)  DOoh, (xx0232@1)I lose control
              G (320003@1)        C(add2)   DCan't (xx0232@1)seem to get enough
           G (320003@1) C(add2)   DWhen (xx0232@1)I wake     from dreaming
              G (320003@1)         C(add2)  DTell (xx0232@1)me is it really love

G (320003@1)            G/B (143121@7)   How will I know?
                   Am7(Girl, (x02010@1)trust your feelings)
             CHow (x32010@1)will I know?
G (320003@1)             G/B (143121@7)   How will I know?
               Am7(Love (x02010@1)can be deceiving)
           C (x32010@1)G/B (143121@7)C (x32010@1)DHow (xx0232@1)will I know?

G (320003@1)           C (x32010@1)     D (xx0232@1)       Em7      G (320003@1)  How will I know if he really loves me
        C (x32010@1)         D (xx0232@1)G/D (4x3121@7)D (xx0232@1)   G/DI (4x3121@7)say a prayer with every heart beat
          C (x32010@1)  D (xx0232@1)         Em7   GI (320003@1)fall in love whenever we meet
           C (x32010@1)           D (xx0232@1)  G/D (4x3121@7) D (xx0232@1)   G/DI'm (4x3121@7)asking you cause you know about these things

G (320003@1)        C (x32010@1)     D (xx0232@1)           Em7    GHow (320003@1)will I know if he's thinking of me
        C (x32010@1)            D (xx0232@1) G/D (4x3121@7)D (xx0232@1)   G/DI (4x3121@7)try to phone but I'm too shy (Can't speak)
           C (x32010@1)     D (xx0232@1)       Em7   GFalling (320003@1)in love is so bitter sweet
             C (x32010@1)           D (xx0232@1)    G/D (4x3121@7) D (xx0232@1) GThis (320003@1)love is strong why do I feel weak

C(add2)  D
Oh, wake me, I'm shaking
               G (320003@1)          C(add2)  DWish (xx0232@1)I had you near me now
             G (320003@1)C(add2)         DSaid (xx0232@1)there's no       mistaking
               G (320003@1)         C(add2)  DWhat (xx0232@1)I feel is really love

G (320003@1)               G/BOoh (143121@7)Baby,  How will I know?
                   Am7(Girl, (x02010@1)trust your feelings)
             CHow (x32010@1)will I know?
G (320003@1)             G/B (143121@7)   How will I know?
               Am7(Love (x02010@1)can be deceiving)
           C (x32010@1)G/B (143121@7)C (x32010@1)DHow (xx0232@1)will I know?

G (320003@1)           C (x32010@1)     D (xx0232@1)       Em7      G (320003@1)  How will I know if he really loves me
        C (x32010@1)         D (xx0232@1)G/D (4x3121@7)D (xx0232@1)   G/DI (4x3121@7)say a prayer with every heart beat
          C (x32010@1)  D (xx0232@1)         Em7   GI (320003@1)fall in love whenever we meet
           C (x32010@1)           D (xx0232@1)  G/D (4x3121@7) D (xx0232@1)   G/DI'm (4x3121@7)asking you cause you know about these things

G (320003@1)        C (x32010@1)     D (xx0232@1)           Em7    GHow (320003@1)will I know if he's thinking of me
        C (x32010@1)            D (xx0232@1) G/D (4x3121@7)D (xx0232@1)   G/DI (4x3121@7)try to phone but I'm too shy (Can't speak)
           C (x32010@1)     D (xx0232@1)       Em7   GFalling (320003@1)in love is so bitter sweet
             C (x32010@1)           D (xx0232@1)    G/D (4x3121@7) D (xx0232@1) GThis (320003@1)love is strong why do I feel weak
      C/D (x5555x@1) G/D (4x3121@7)     C/D (x5555x@1)    G/DIf (4x3121@7)he loves me, if he loves me not
      C/D (x5555x@1) G/D (4x3121@7)     C/D (x5555x@1)    GIf (320003@1)he loves me, if he loves me not
      Am (x02210@1) G/A (320203@1)     C (x32010@1)    G/C (2431xx@7)   D (xx0232@1)     
        EIf (022100@1)he loves me, if he loves me not, Ohhh How will I know?

(key change to E major: repeat instrumental melody with chords over "How will I know?")

E (022100@1)  A (x02220@1)   B (x2444x@1) C#m7E    A (x02220@1)   B (x2444x@1)  E/B (443121@4) B (x2444x@1) E/BE    A (x02220@1)   B (x2444x@1) C#m7 (x4242x@1)E (022100@1)        A (x02220@1)     B (x2444x@1)       C#m7 (x4242x@1)     EHow (022100@1)will I know if he really loves me?
        A (x02220@1)         B (x2444x@1) E/B (443121@4) B (x2444x@1)   E/BI (443121@4)say a prayer with eve-ry    heart beat
          A (x02220@1)      B (x2444x@1)     C#m7 (x4242x@1)  EI (022100@1)fall in love whenever we meet
           A (x02220@1)            B (x2444x@1)   E/B (443121@4)B (x2444x@1)   E/BI'm (443121@4)asking you 'cause you know about these things

A (x02220@1)     B (x2444x@1)           C#m7 (x4242x@1)  EHow (022100@1)will I know if he's thinking of me?
         A (x02220@1)           B (x2444x@1) E/B (443121@4) B (x2444x@1)   E/BI (443121@4)try to phone but I'm too shy (Can't speak)
           A (x02220@1)     B (x2444x@1)        C#m7 (x4242x@1)  EFalling (022100@1)in love is all bitter sweet
             A (x02220@1)           B (x2444x@1)    E/B (443121@4)B (x2444x@1) E/BThis (443121@4)love is strong why do I feel weak

(Repeat and fade-out)