How Long Has This Been Going On chords

[VERSE]
[G6]I could [Em7]cry [Am7]salty t[D5]ears --
[G6]Where have [G7]I been [CM7]all these y[Cm6]ears?
[G]Lit - [G]tle [Em7]wow, [CM7]tell me [Am7]now,
How l[C]ong has t[Am]his been [D9]go - [D5]ing o[G]n?
T[G6]here were c[Em7]hills [Am7]up my s[D+5]pine,
[G6]And some th[G7]rills I [CM7]can't de[Cm6]fine;
[G]List - en, s[Em7]weet,[CM7] I re[Am7]peat,
How l[C]ong has t[Am]his been [D9]go - [D5]ing [G]on?

[BRIDGE]
[CM7]Oh, I f[FM7]eel that[CM7] I could [FM7]melt;
[CM7]Into h[Dm7]eaven [G7]I'm h[CM7]urled.
[Em]I know [Em7]how C[Em7]olumbus [Em6]felt
F[Am]inding a[Am7]nother w[D7]orld.

[G6]Kiss me o[Em7]nce, t[Am7]hen once m[D+5]ore;
[G6]What a d[G7]unce I [Cm7]was bef[Cm6]ore.
[G]What a b[Em7]reak, for [CM7]heaven's[Am7] sake,
How l[C]ong has t[Am]his been [D9]go - [D5]ing [G]on?

[BRIDGE]
[G6]Kiss me t[Em7]wice and t[Am7]hen once [D+5]more --
[G6]That makes th[G7]rice, let's [CM7]make it [Cm6]four.
[G]What [G]a [Em7]break, for [C]heaven's [D7]sake,
How l[C]ong has t[Am]his been [D9]go - [D5]ing? [G]
How l[C]ong has [Am]this been[Cdim] go - i[D7]ng. [G]