Summer in Sodom by Edwin Fey, Chapter 4

Ian Raymond wanted Ted Randall more than he had ever desired anyone--and he would use every device of desire and pain to get him!
Set against the strange background of erotic, forbidden acts performed on moonlit beaches, Summer Sodom is the explosive story of the fateful decision virile Ted Randall had to make--to give his lean, hard-muscled body to a woman, or be enslaved by the overpowering masculinity of a hot-blooded male.
Published 1965