Robert Gagnon
The hateful reaction [to conservative thinkers on this question] stems largely from a comparison of such persons to racists and sexists. Yet such a comparison begs the question of whether the comparison is accurate. If opposition to gay marriage is more like opposition to marriage between close kin and to marriage between three or more persons, than one arrives at very different conclusions about what constitutes love.
http://www.christianpost.com/news/the-bible-and-the-gay-marriage-question-part-1-52020/