Night and disco light

I was left with preoccupied mind,
At the darkest part of the night.
Lights are switching,
On and Off it's blinking.
The ambiance was loud,
Coming from deafening sound.
And from that dancing crowd,
A man have come out.
Staring at me directly,
I glared back blankly,
He smiled politely,
Held my waist gently,
And to a dance he asked me.
But like any other story,
We've turned tragic,
After that magic.
He gave the last glance,
At the end of our dance.
And from that dancing crowd,
There was a defeaning sound,
That made the ambiance loud.
The on and off blinking,
Made the light's switching.
And at the darkest part of the night
I was left with preoccupied mind.