Wild Heart by Sadie King

She’s off-limits and half his age, but this ex-military biker is a protector hero who won’t give up the woman who captures his heart.
Isabella Berone has haunted my dreams since I watched her strut into the White Out nightclub two years ago.
She was too young then, the mafia princess with something to prove. But I watched, and I waited.
When Isabella needs me, I’m there for her. I’ll protect her with my life. Because despite the age gap, despite her being off limits, I’ve fallen for the wild mafia princess.
When her father comes for her, I’ll be ready. I swore to fight for my country once, and now I’ll fight for Isabella, no matter the cost.