"Can I Die With You?" (Yandere Fiancé X Female Reader)

Engaged to someone Y/n have never met before, she is forced in a one sided love relationship and can't even choose who she wants to be with.
Her parents have given her hand to their friend's only son who's name is Zackary Roberts; a man who's the same age of Y/n, and has a unique personality when he's near the dear female.

Would this end well for Y/n..?

WARNING: CUSSING, GORE, AND INAPPROPRIATE STUFF AHEAD.