The Opposite Effect by Shandi Boyes

Brax Anderson is the #1 bachelor on his side of Ravenshoe. With ruggedly handsome looks and a heart of gold, women swarm him like bees at a honeypot.

His grandma, friends, and a few hours beneath the sheets with various bunnies ensure this self-proclaimed bachelor isn’t close to settling down…
… until a fire-breathing blonde from the right side of the tracks strolls into his life.
Trust-fund billionaire, Clara McGregor, has a red-hot attitude and a body just as spicy. However, it isn’t solely Brax’s blood pressure she surges to record-breaking highs when she demands he tattoo a man’s name on her virginal skin.
When Brax refuses her request—for both professional and personal reasons—Clara tosses out insults like grenades, hopeful he will buckle under the pressure like everyone else she spars with.
Although Brax eventually folds, the win isn’t close to what Clara expected. He tattoos her design as requested but switches the man’s name to ‘princess.’
Furious, Clara threatens to sue, so the last thing Brax expects is for her to return to his tattoo parlor only weeks later, seeking a position.

The Opposite Effect is a slow-burning enemies-to-lovers romance from an all-male POV. It can be read as a standalone.