Jim Reeves' "Four Walls" lyrics is a prisoner's song as regarded in Japan? What is it really about?

Out where the bright lights are glowing
You're drawn like a moth to a flame
You laugh while the wine's overflowing
While I sit and whisper your name

CHORUS:
Four walls to hear me
Four walls to see
Four walls too near me
Closing in on me

Sometimes I ask why I'm waiting
But my walls have nothing to say
I'm made for love not for hating
So here where you left me I'll stay

One night with you is like heaven
And so while I'm walking the floor
I listen for steps in the hallway
And wait for your knock on my door.
----I think if you you first hear the song you can say that it is a prisoner song because of the chorus part of the lyrics but in my opinion I think it is a song for a broken hear-ted people that enclose their self in their misery while the other move on