Son of a Gun by Jay Crownover

Heavy is the head that inherits the crown.

The only thing on Daire Archer’s mind when she pulled a disappearing act on Christmas was proving she was worthy of being her father’s daughter. She was born an Archer, which was a blessing and a curse, and Daire was determined to show everyone she deserved to carry the legacy that came with her name.
There is power in a name, and being an Archer meant Daire needed to do better, to be better. At least, that’s what she thought she needed, until a boy from nowhere—with a name that meant nothing—showed her that she was already pretty great just the way she was.
Campbell has always rejected everything concerning his maniacal father and his troubled past. When he left Nowhere, he was certain he wanted a nice, quiet life free from the only things he’d ever known: violence and bloodshed. He thought he needed to be a better man. He wondered if there was a kinder, gentler version of himself under his thick armor of scars and tattoos.
It wasn’t until he started chasing Daire Archer all over hell and back that Campbell realized he needed to be a man who was better at being bad than everyone else in his troubled world.
Because now, he had a problematic princess to protect. One with an uncanny ability for finding trouble. Where Daire is concerned, being a good guy isn’t necessary.