I love this song :) It's so cute, haha.
This is how Tiffany plays it, so i'm for sure it's right.

Capo on 7th


Intro: G, C, D, G


Verse: G, C, D, G


Pre-chorus: Am, G, Em, D


Chorus: Em, C, G, D
OOPS: In the end of the chorus it says:
"And you, are the music to my melody
      Em (022000@1)                     CAnd (x32010@1)we, yes you + me, create the perfect, the perfect, chemistry"
    G (320003@1)                             D (xx0232@1)         Am (x02210@1)
Bridge: I have to show you this one:
And I have, wanted just one guy, to 
    Am (x02210@1)                    Emshow (022000@1)me that they aren't all the same
                     Am (x02210@1)         EmAnd (022000@1)you are, that one guy for me, I 
    Am (x02210@1)                      Emwanna (022000@1)feel this way forever, for eternity
                 Am (x02210@1)               DAnd (xx0232@1)you have showed me love is true  
    Am (x02210@1)                        Emand (022000@1)no one understa-ands, me better than you do
                   G (320003@1)                    D (xx0232@1)Have fun!