Too Sinful for Love: A Forbidden Romance

I know I'm not supposed to fall for my billionaire professor...

Especially since he seems to hate me on first sight.
But because I've always been too stubborn for my own good---
I don't drop his class even as he breaks my heart over and over.
I'm thinking I'll eventually wear him down, but what I don't realize until it's too late is that all this time---
He's been pushing me away for my own good.
Professor Matthijs has a secret, and it's one that can tear me into pieces.