PS- Celebrities whose bisexuality or homosexuality is not in dispute but who have married or been seriously involved with members of the opposite gender:
Will “Grandpa Walton” Geer (married-divorced, 3 children)
Alan Cumming
Robert “Mike Brady” Reed (married-divorced, 1 child)
Rock Hudson (studio arranged marriage, but consummated)
Cole Porter (married for 36 years to Linda Lee Thomas, by all accounts the love of his life- no children [but consummated])
Elton John (married-divorced, no children)
Malcolm Forbes (married-divorced, several children, boys on the side)
Luther Vandross (never married but frequently said to be involved with this or that woman)
Richard Chamberlain (never married but lots of studio “front” women)
Peter Allen (one of Liza’s matched set of gay husbands)
Tony Richardson (director/producer, father with Vanessa Redgrave of Natasha & Joely Richardson)
Michael Redgrave (father of Vanessa, Lynn & Corin Redgrave and grandfather of Natasha & Joely Richardson [if it is genetic then Liam Neeson may wanna hold off on buying his sons a football just yet])
Raymond Burr (married at least once and dated several starlets; faked additional marriages and even a non-existent dead son; lived with lover Robert Benevides for more than 30 years)
Liberace (had at least one official marriage engagement and dated Sonia Henie)
Dick Sargent (bka Darrin on Bewitched: went on “dates” with Fannie Flagg and [the woman who played Zelda on Dobie Gillis] to appease studio bosses [both women are lesbians])
Chad Allen (bka star of Dr. Quinn: Politically Correct Medical Squaw and as the autistic kid who imagined St. Eligius; was rumored to be involved with a couple of starlets and to live with one [which he did, as roommates] before being outed by an opportunistic date)
Many more of course, but that’s enough for the whole “married or involved ain’t neccessarily straight” thing.