Heartland #4: Taking Chances by Lauren Brooke
Amy knows that Ty is important to Heartland - and to her. Ty is the only person who truly understands the meaning of Heartland, who is as dedicated to rescuing and curing horses as she is. But their friendship is thrown off balance when Ben, the new stable hand, arrives. And by the time Amy realizes she's pushed Ty away, he may have decided to leave Heartland for ever.