I'm trembling inside, and nobody knows it but me

These four walls closing more every day
I'm dying inside,
And nobody knows it but me

Like a clown I put on a show
The pain is real even if nobody knows
And I'm crying inside
And nobody knows it but me

Lie awake, it's a quarter past three
I'm screaming at night if I thought you'd hear me
Yeah, my heart is calling you
And nobody knows it but me

How blue can I get?
You could ask my heart
But like a jigsaw puzzle it's been torn all apart
Billion words couldn't say just how I feel

Maybe you'd be here right now but instead...