Misadventures with a Country Boy (Misadventures #17) by Elizabeth Hayley

Brooke is running away, from what she hasn't decided which part of her life is the worse. Cole is traveling to find some peace in his life, until he finds this girl at a gas station and she turns his life upside down.
Brooke accepts a ride from Cole, but as she gets to know him more she gives him much more than her acceptance; she gives him her heart. Cole didn't want a moody woman along on his ride, but couldn't leave her sitting on the curb looking so broken. He agreed to give her a ride to where she was going, but she ends up breaking his walls down and climbing in his heart and not letting go.