He certainly seems like a good possibility. Born in 1945 in Detroit, Selleck began his career as a model, and moved into acting while attending the University of Southern California. He wandered around the studios for several years, doing guest spots as pretty boys and hunks -- you can see him nude in Coma (1980).
His big break came when he passed up the role of Indiana Jones for Magnum, P.I. (1980-1988), about a sardonic private detective. Magnum lives in Hawaii on his rich friend's estate (in his absence), and has carte blanche to use all of his fancy toys (apparently they are very close).
Magnum has a couple of scoobies (Roger E. Mosley, Larry Manetti), and butts heads with the officious, gay-coded but heterosexual Higgins (John Hillerman), who comes with the estate.
I never saw it, but I heard a lot about Tom Selleck. His feminine mannerisms, short-short pants, hairy chest, and Castro Clone moustache set off everyone's gaydar, making everyone believe that he was "one of us."
In spite of his two marriages (to Jacqueline Ray from 1971 to 1982, and to Jillie Mack from 1987 to the present).
In spite of (or maybe because of) his 1991 lawsuit against a tabloid for printing a story alleging that he was gay. He wanted damages of $20 million -- that's either extreme homophobia, or an extreme attempt to stay in the closet.
In spite of his interview in The Advocate in 1997, in which he protests that he is straight, and yells that "It's not anti-gay to say that you aren't gay."
Um..gee, Tom, when you say it so vociferously, and so expensively, it kind of is.
I heard a lot of Tom Selleck hookup stories in the 1980s.
The full story, with nude photos and explicit sexual content, is on Tales of West Hollywood.