This Book isn't Fat it's Fabulous by Nina Beck
Sixteen year old Riley Swain, pushed into spending Spring Break at an upstate New York "fat farm" by her father's fiancee, is happy with her weight but finds she has a lot to learn about friendship and love.
Chameleon by Charles R. Smith Jr.
The summer before starting high school in inner city Los Angeles, fourteen year old Shawn grapples with his first experience of love, the complicated bonds of friends and family, and the reality of street gang violence.