Came out of no where

You came out of no where
You've been the friend I needed
You've been the distraction I wanted
Then when it grew into more
You were exciting and new
But you are forbidden fruit
Yet we continued
And we continued
To only realize we could continuously get away
With our little secret
I still love my fiancé
I swear iv tried to end it
But how do you end something that works
How do you end a friendship like this
Why did you have to come out of no where