NO capo
I would play the Fm barred on the first fret then on the 8th in the pre chorus an 
at the end of the main chorus.

Verse / Chorus  Fm , Ab , Eb, C# . 

Pre Chorus   C#, Eb, Fm, Eb
[VERSE 1]
Fm
I remember years ago
Ab 
Someone told me I should take
Eb
Caution when it comes to love
C#
I did, I did
Fm
And you were strong and I was not
Ab
My illusion, my mistake
Eb
I was careless, I forgot
C#
I did

[PRE-CHORUS]
     C#
And now when all is done
                     Eb
There is nothing to say
                                Fm
You have gone and so effortlessly

You have won
                  Eb
You can go ahead tell them

[CHORUS]
                 Fm
Tell them all I know now
                   Ab
Shout it from the rooftops
                  Eb
Write it on the skyline
               C#
All we had is gone now
                 Fm
Tell them I was happy
                Ab
And my heart is broken
                  Eb
All my scars are open
                  C#
Tell them what I hoped would be
        Fm          Ab
Impossible, impossible
        Eb            C#
Impossible, impossible

(repeat chord progressions throughout)

[VERSE 2]
Falling out of love is hard
Falling for betrayal is worst
Broken trust and broken hearts
I know, I know
Thinking all you need is there
Building faith on love is worst
Empty promises will wear
I know (i know)

[PRE-CHORUS]
And know when all is gone
There is nothing to say
And if you're done with embarrassing me
On your own you can go ahead tell them

[CHORUS]
Tell them all I know now
Shout it from the rooftops
Write it on the skyline
All we had is gone now
Tell them I was happy
And my heart is broken
All my scars are open
Tell them what I hoped would be
Impossible, impossible
Impossible, impossible
Impossible, impossible
Impossible, impossible
Impossible, impossible

I remember years ago
Someone told me I should take
Caution when it comes to love
I did

Tell them all I know now
Shout it from the rooftops
Write it on the skyline
All we had is gone now
Tell them I was happy (i was happy)
And my heart is broken
All my scars are open
Tell them what I hoped would be
Impossible, impossible
Impossible, impossible
Impossible, impossible
Impossible, impossible
Impossible, impossible

I remember years ago
Someone told me I should take
Caution when it comes to love
I did