Racing hearts

"Five months ago, Sienna Shoring lost her best friend, Stacey, to suicide. Now Sienna's back at school, struggling--and failing--to find her new place in the social hierarchy. . . . When a package arrives for the 'Try It Triathlon,' which Stacey signed them up for as a joke, it's like receiving a message from the grave. Sienna has no experience with running or biking. And she doesn't even own a swimsuit. But she decides to take on the challenge in honor of her best friend, despite being a 'fat girl.' And when mysterious jock Blake Romano approaches her unexpectedly and offers to train with her, she can hardly say no. . . . But Blake has a secret that might just break Sienna's heart, even as he's winning it"--Provided by publisher.