Intro [bass line and chords shown]:

                               Ab  Bb        [2X]
       v   v   v   v     v   v   v   v
      ----------------- | -3-----1--------- | 
      -3-3-3-3-3-3-3-3- | ----------------- | 
      ----------------- | ----------------- | 
      ----------------- | ----------------- | 

             Ab  Bb        Bb  Ab
       v   v   v   v     v   v   v   v
      -5-----3--------- | -7-----5--------- | 
      ----------------- | ----------------- | 
      ----------------- | ----------------- | 
      ----------------- | ----------------- | 

[Note: no strict verse/chorus structure]

      Bb       Ab
      It's no secret
      Bb             Ab
      How strong my love is for you
      Bb       Ab
      It's no secret
      Bb                        Ab
      When I tell you what I'm gonna do
                                Bb
      'Cause I love you, yes I love you
      Eb       C#
      It's no secret
      Eb              C#
      Everybody knows how I feel

      Bb       Ab
      It's no secret
      Bb             Ab
      When I say my love is real
                                Bb
      'Cause I love you, yes I love you
      Eb       C#
      It's no secret
      Eb               C#
      When you got me jumpin' up and down

      Bb       Ab
      It's no secret
      Bb                  Ab
      'Cause my heart is chained and bound
                         Bb
      I love you, yes I love you, yeah
      Eb       C#
      It's no secret
      Eb              C#
      Everybody knows how I feel

Guitar solo:

      Bb       Ab       Bb       Ab                Bb
      / / / /  / / / /  / / / /  / / / /  / / / /  / / / /

      Eb                [Fm/Eb*]                 [Eb]
      As I get older the years they get heavy for you **
      (Whoa) Is it any wonder I feel that my whole life is through **
      (Yeah) When I start feelin' how strong my love is for you **
      (Whoa) Knowin' I'll be empty wantin' your love like I do **

      * chords implied by vocal harmonies

      ** 12-string, capo I:

                        [4th time only]
      --0-0-0----0-0-0------0-2-3-----
      --3-5-5----3-5-5----------------
      --2-4-5----2-4-5----------------
      --------------------------------
      --------------------------------
      --------------------------------

      [song is in Eb from this point on]

      Ab       F#
      It's no secret, no
      Ab               F#
      When you got me jumpin' up and down

      Eb       C#
      It's no secret
      Eb                  C#
      'Cause my heart is chained and bound
                         Eb
      I love you, yes I love you

      Eb       C#
      It's no secret, no
      Eb              C#
      Everybody knows how I feel, yeah
      Eb       C#
      It's no secret, no
      Eb              C#
      Everybody knows how I feel
      Eb       Db    Ab5/Eb  [12-string, capo I: xx003x]
      It's no secret


-- another ace 60's tab from Andrew Rogers