Notes in Constellations Lyrics

There's this chord of which name I dunno since I saw a guy playing these chords on
a youtube video. This is not exactly exactly what he played but I think it's quite better.
Anyway the unknown chord is marked as Cmaj7, but it's actually played like this:
I see her smile in her sleep
I know that she's a dreamer.
Oh, I'll follow every move she makes.
It's been a long, long night.
Say you're mine. Say you're mine.
Can I keep you tonight?
Tonight...
And we dance around just like constellations.
You keep my body warm.
And we dance around just like constellations.
You're keeping me awake at night.
You make my body warm.
And I fall for her like snow from the sky.
Gracefully I land in her arms.
But I melted away like snow into the ground.
I told her I've gotta go.
I've gotta go.
And we dance around just like constellations.
You keep my body warm.
And we dance around just like constellations.
You're keeping me awake at night.
You make my body warm.
It's been a long, long night
You said you're mine.
I felt so bad but I had to go.
No she never wanted me to leave her behind.
No she never wanted me to leave her.
(To leave her) So long, so long.
(Chorus)