K-pop Lyrics

This is a simple song, gonna write it for a friend
My shirt is inside out, I'm messy with the pen
He met Margaret on a rooftop, she was wearin' white
And he was like, "I might be in trouble"
He had flashes of the good life, he was like
"Should I jump off this building now or do it on the double?"

'Cause, baby, if your love is in trouble
Baby, if your love is in trouble
Baby, if your love is in trouble

When you know, you know
When you know, you know
It kinda makes me laugh
Runnin' down that path
When you're good, it's gold
'Cause when you know, you know

Words aren't my friends
But they're red flags, they're white knights
They're black eyes and they're blue lies
If you're askin' yourself, "How do you know?"
Then that's your answer, the answer is "No"
You gotta run, gotta run, run, run, run like your head's on fire
Run away like your head is on fire

'Cause, baby, if your love is in trouble
Baby, if your love is in trouble
Baby, if your love is in trouble

When you know, you know
When you know, you know
It kinda makes me laugh
Runnin' down that path
When you're good, it's gold
'Cause when you know, you know
And when you're old, you're old
Like Hollywood and me
The diamond on your ring
The soul that you bring to the table
The one that makes me sing
In a minor key
'Cause when you know, you know
When you know, you know

So if you don't know, don't give up
'Cause you never know what the new day might bring

Maybe tomorrow you'll know
Maybe tomorrow you'll know
Maybe tomorrow you'll know
I mean, join the party, by the way, the party is December 18
(Hey, let's waltz this out, 'cause)

'Cause when you know, you know
And when you're old, you're old
Like Hollywood and me
That diamond on your ring
The soul that you bring to the table
The one that makes me sing
In a minor key
Diamond on your ring
'Cause when you know, you know
When you know, you know