Although he had been married for three years during the 1950s, by the 1970s Tryon was in a romantic relationship with Clive Clerk, one of the original cast members of the Broadway sensation, A Chorus Line. Clerk was also an interior designer, and the apartment he decorated for Tryon on Central Park West in New York City was featured in Architectural Digest. Tryon was also involved in a relationship with Cal Culver, also known as Casey Donovan, a famous gay porn star (see photo below). Culver’s best known film, Boys in the Sand, is a classic of the genre.
Another popular book was The Other (1971), an influential psychological horror novel about personality transference between twins. It was made into a film about a boy whose evil twin brother may or may not be responsible for a series of deaths in a small rural community set in the 1930s. A later novel, Lady, written in 1975, concerns the friendship between an eight-year-old boy and a charming widow in 1930s New England and the secret he discovers about her.