A Twist of Fate

//twist of fate//
a fateful event: an unanticipated change in a sequence of events.

"They sat together in the park
As the evening sky grew dark,
She looked at him and he felt a spark
tingle to his bones.
'Twas then he felt alone and wished that he'd gone straight
And watched out for a simple twist of fate."
...
"People tell me it's a sin
To know and feel too much within.
I still believe she was my twin, but I lost
the ring.
She was born in Spring, but I was born too late.
Blame it on a simple twist of fate."

- Simple Twist of Fate, by Bob Dylan.