Healing You by Katana Collins

After breaking off her engagement, Yvonne Sarzacki is finally at peace with a career she loves—rescuing animals and placing them in their forever homes. But when her dog is diagnosed with cancer, her high school ex-boyfriend Steve Tripp is the only veterinarian who can save his life. They’ve barely spoken since a senior year tragedy ripped them apart, but her traitorous heart doesn’t seem to care that he abandoned her when she most needed him.
Steve Tripp, DVM prefers the company of animals to the messiness of real-life relationships. Scarred since the car wreck that almost killed him and his high school girlfriend, Steve has spent the last thirteen years avoiding emotional entanglements—especially when they involved Yvonne. But fate has other ideas when she walks into his veterinary clinic with her sick dog.
With the help of the four legged survivor, they begin to break down the walls between them. All wounds must heal eventually; but sometimes the damage runs deeper than the scars you can see.