If you can't perform bar chords you could try and play the F chord like this :)
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Chorus
[C] [Am]
Nothing stays the same and
[G] [F]
Seasons keep on changin' as they do
Verse 1
[C]
Look what we got
[Am]
A thickening plot
[G] [F]
Just when I started getting used to
The thought
[C]
Of closing the book
[Am]
There you were, in every nook
[G]
Of every word, every page
[F]
And now I wanna stay and wait, 'cause
Pre-Chorus
[C]
Met every comma, every question mark
[Am]
Bored of how all of the chapters start
[G]
But you feel like a brand new arc
[F]
That I never knew, oh
[C]
Like to think I know a thing or two
[Am]
Like every day, the sky's a different blue
[G] [F]
And then along came you, oh
Guess
Chorus
[C] [Am]
Nothing stays the same and
[G] [F]
Seasons keep on changin' as they do
And we're all still just
[C] [Am]
Stories above concrete
[G]
X amount of heartbeats, so
[F] [C]
Thank God for plot twists like you
[Post-Chorus]
[Am] [G] [F]
Ooh, ooh, ooh, ooh
Verse 2
[C]
Where have you been
[Am]
All of my life?
[G]
It's all growin' dim now
[F]
That you've come to light
[C] [Am]
And who could've known, who would've thought
Between the wishbones and dot-dot-dots
[G] [F]
There was always gonna be you and I
And now
Pre-Chorus
[C]
Dancing barefoot in the open streets
[Am]
Hangin' onto every word you speak
[G] [F]
'Cause you keep me at the edge of my seat
With your every move, oh
[C]
Like to think I know a thing or two
[Am]
Like every story ending's tried-and-true
[G] [F]
And then along came you, oh
Guess
Chorus
[C] [Am]
Nothing stays the same and
[G] [F]
Seasons keep on changin' as they do
And we're all still just
[C] [Am]
Stories above concrete
[G]
X amount of heartbeats, so
[F] [C]
Thank God for plot twists like you
[Post-Chorus]
[Am] [G] [F]
Ooh, ooh, ooh, ooh
[C]
Ooh (Who could've imagined)
[Am]
Ooh (Who could've imagined you?)
[G]
Ooh (Who could've imagined)
[F]
Ooh (Who could've imagined you?)
Outro
[C]
Who could've imagined (Who could've imagined)
[Am]
Who could've imagined you? (Who could've imagined)
[G]
Who could've imagined (Who could've imagined)
[F]
Who could've imagined you?
[C]
Who could've imagined (Oh)
[Am]
Who could've imagined you? (Mmm)
[G]
Who could've imagined (Mmm)
[F]
Who could've imagined you?
[C]
Who could've imagined
[Am]
Who could've imagined you?
[G]
Who could've imagined
[F]
Who could've imagined you?