Tank by Em Petrova

Rob Parker, aka Tank, is the unluckiest bastard alive. After losing his job and wrecking his bike, his days are filled with boredom and too many bad habits to count. He also can’t seem to get away from the woman who torments the hell out of him—and worse, she belongs to another.
Each time Catarina’s boyfriend rips her heart out, her best friend Tank is there to listen. He’s also the guy with the strongest arms to run to. When her life takes yet another nosedive, Tank can’t keep his hands off her, and she finds just how good his rough touch makes her feel. But losing her best friend isn’t an option—what would she do without him?

Scarier question is…what will she do if she doesn’t act on her growing feelings?