had known; had met
Si no me hubiera conocido, se hubiera acostado con otra.
If he hadn't met me, he would have slept with someone else.
— Una cuestión de tiempo (2013)
Ella no se hubiera casado con él si lo hubiera conocido mejor.
She wouldn’t have married him if she had known him better.
Si te hubiera conocido, habríamos tenido un gran libro.
If I had met you, we would have had a great book.
— La gran belleza (2013)
I wish I had met her.