“The  Rainbow Trilogy” by Alex Sanchez is aimed at teenagers undergoing a sexual identity crisis. The key players in the series are 3 teenagers in high school who later head off to college. They deal with their sexuality together. The titles are:

Rainbow Boys

Rainbow High

Rainbow Road

Another book by the same author is The God Box:

“With candor, conviction, and compassion, Alex Sanchez dramatizes the plight of teens who struggle to balance their homosexuality and their deeply felt religious beliefs. An important, heartfelt book that deserves a wide readership.” — Michael Cart, editor of Love & Sex: Ten Stories of Truth