The Hurricane by R.J. Prescott

Emily McCarthy is living in fear of a dark and dangerous past. A gifted mathematician, she is little more than a hollow, broken shell, trying desperately to make ends meet long enough to finish her degree. Through an unlikely friendship with the aging, cantankerous owner of an old boxing gym, Em is thrown into the path of the most dangerous man that she has ever met.

Cormac the Hurricane O’Connell is cut, tattooed and dangerous. He is a lethal weapon with no safety and everyone is waiting for the mis-fire. He’s never been knocked out before, but when he meet Em he falls, hard. Unlike any other girl he’s ever met, she doesn’t want anything from him. Just being around her makes him want to be a better person. They are polar opposites who were never meant to find each other, but some things are just worth the fight.