I figured this out by ear... apologies if it's wrong, and apologies for leaving 
out the instrumentally parts. But you should be able to work it out yourself, with a bit of luck.

BLet (x2444x@1)me start by saying sorry
               AI (x02220@1)know I don't tell you how I feel
           EIt (022100@1)takes enough to say I want you
but that's not what you need
        BI (x2444x@1)care about you
             Abut (x02220@1)love's a much stronger word
       Eand (022100@1)"I like you" really doesn't sum up
how much you're worth

A (x02220@1)                                     EI'm (022100@1)the last straw on the camel's back away
                        Bfrom (x2444x@1)saying those three words

AI'm (x02220@1)putting a message in this song
                         Eand (022100@1)I'll get everyone to sing along
B (x2444x@1)                       AJust (x02220@1)to let you know how I feel
EA (022100@1)valentine on mp3
yours forever,
               Bless (x2444x@1)than three

[E]        BYou (x2444x@1)know I miss you
            Awhen (x02220@1)my connection goes down
      Eand (022100@1)I can't see your face to make it seem
like you came around
                   BThose (x2444x@1)days without you
          AI (x02220@1)find it harder to sleep
       EEven (022100@1)a half bottle of morgan's
couldn't make me complete

A (x02220@1)                                              EI'm (022100@1)the hair on the back of your neck's breadth away
                        Bfrom (x2444x@1)saying those three words

AI'm (x02220@1)putting a message in this song
                         Eand (022100@1)I'll get everyone to sing along
B (x2444x@1)                       AJust (x02220@1)to let you know how I feel
EA (022100@1)valentine on mp3
yours forever,
               Bless (x2444x@1)than three

ATake (x02220@1)the distance from the depths of the deepest ocean
                 Eto (022100@1)the surface of pluto
                                  Aand (x02220@1)multiply by as far as you can count
           Eand (022100@1)you'll still be nowhere near
you'll still have no idea
how much I want to hold you

B (x2444x@1)                           AI'm (x02220@1)putting a message in this song
                         Eand (022100@1)I'll get everyone to sing along
B (x2444x@1)                       AJust (x02220@1)to let you know how I feel
EA (022100@1)valentine on mp3
yours forever,
less than three