"No Going Back" by Jonathan Langford

First, my caveat--this book deals with the difficult subject of a teen who is same-gender attracted and his struggle to deal with those feelings without going against the principles he had been taught growing up in the LDS Church. I know several people who read it with some reluctance, but found it a wonderful read and very well done. I haven't read it myself.

Here's what it says about the book on Jonathan's website:

A Coming-of-Age Novel About What It Means to Be Teenage, Mormon — and Gay

A gay teenage Mormon growing up in western Oregon in 2003. His straight best friend. Their parents. A typical LDS ward, a high-school club about tolerance for gays, and a proposed anti-gay-marriage amendment to the state constitution. In No Going Back, these elements combine in a coming-of-age story about faithfulness and friendship, temptation and redemption, tough choices and conflicting loyalties.

You can learn more about Langford and his book, including a sample chapter on his website.