These days there is an abundance of good books that discuss the Bible and homosexuality from an affirming perspective. Here are some of them:
Wilson, Nancy (1995) Our Tribe: Queer Folks, God, Jesus and the Bible
Swicegood, Thomas (1974, 2003) Our God Too
Scroggs, Robin (1983)The New Testament and Homosexuality,
Scanzoni, Letha and Mollenkott, Virginia R. (1978) Is The Homosexual My Neighbor,
McNeill, John J. (1977) The Church and the Homosexual (1989) Taking A Chance on God
Martin, Dale (2006) Sex and the Single Savior
Kader, Samuel (1999) Openly Gay, Openly Christian
Jennings, Theodore (2005) Jacob's Wound; (2009) Plato or Paul?
Horner, Thomas (1978) Jonathan Loved David
Helminiak, Daniel (1994) What the Bible Really Says About Homosexuality
Hanks, Thomas (2003) The Subversive Gospel
Cleaver, Richard (1995) Know My Name
The Queer Bible Commentary (2006) Editors: Bohache, Goss, Guest & West,
I'm always on the look out for books that cross barriers and think outside of the box. Inclusion on this list doesn't infer that they share my perspective on sexuality. Here are some of my favourite reads:
Halter, Hugh & Smay, Matt (2008) The Tangible Kingdom
Frost, Michael & Hirsch, Alan (2009) A Wild Messiah for a Missional Church
Wren, Brian (1989) What language Shall I Borrow?