Metaphorical

Your eyes, his eyes, how they meet 
And I, fading, into the mist... 
Dance, dance the waltz, 
Float on the air of lust, 
Let me watch and relive 
The moments never mine, 
Dance always knowing 
Someone is watching you both. 
 
My voice echoes the absurd, 
Talking to the demons I hide, 
Time flows, nobody knows 
Just what is behind that smile, 
And the laughter on the eyes deceive. 
 
No step I take gets me closer, 
Each breath just gets me further back, 
So while the angels refuse 
To come to my side, 
I remain beside you both, 
In cold, in light, in fear, in pain 
Never to show the changes in me.

Tell me, why do we?