Imperfect Chaos Series by Marie York

The only thing Nixon Bennett ever excelled at is fighting. No one ever understood him, especially his parents and sister. Then Brooklyn Davis walks into his gym, and his world shifts. Brooklyn is just like him in so many ways, and yet so fragile in others. Can she fix this broken boy even though she's broken herself?

B. I've spent years running and hiding. Unfortunately, my past has caught up to me. Viper. For years, all I've wanted is to be the best, family and relationships be damned. These two have scars from the past, but can they heal in time for a future together? Mine was just the beginning. Now it's Yours.

Nixon Bennett witnesses the only girl he’s ever loved free herself from her past, but in doing so he pays the ultimate consequence for her actions. Out of options, and with the fight of his life coming up, he has to push aside an old feud. His future now lies in the hands of the one person he swore he’d never speak to again. Will his past be able to save his future?