Intro 2x: D A G 

D
Granddaddy always said
     A                     Bm
When he was 17 he met the girl
     G
The one in all his dreams
                 D
And man that was it
    A
He never once looked back
          Bm
He found something
         G
He just knew was gonna last
           Bm   A   D         G
And if you ask him 'bout that day
           Bm   A   D        G
He'll just tap his chest and say

[CHORUS]
                D
That's how you know
         A                                Bm
When it grabs a hold of you and won't let go
         G                                    D
When you feel like she's always been in your soul
        A                                  Bm
And as time goes by she's still surprisin' you
    A                     G
That's how you know it's true
       Em                    A
When a new love feels old
                       D    A    G
And an old love feels new

D
He said I walked up to her door
           A                                Bm
And I was shakin' like a leaf there on her porch
          G
'Til she flashed that smile at me
             Bm  A   D      G
And son she took my breath away
         Bm    A   D       G     A
And she still does to this day

[REPEAT CHORUS]
                D
That's how you know
         A                                Bm
When it grabs a hold of you and won't let go
          G                                   D
When you feel like she's always been in your soul
        A                                  Bm
And as time goes by she's still surprisin' you
    A                     G
That's how you know it's true
       Em                    A
When a new love feels old
                      G    D    A
And an old love feels new

G  D  A

Bm   A   D
And now I finally see
               G
Just what he means
              Bm  A   D   C                       A
'Cause that's how I feel now that you're with me
                 D
That's how I know
           A                                  Bm
'Cause you grabbed a hold of me and won't let go
        G
And it feels like you've always been in my soul

[REPEAT CHORUS]
                D
That's how you know
         A                                Bm
When it grabs a hold of you and won't let go
          G                                   D
When you feel like she's always been in your soul
        A                                  Bm
And as time goes by she's still surprisin' you
    A                     G
That's how you know it's true
       Em                    A
When a new love feels old
                      D    A    G
And an old love feels new

D  A  G