Granted this is not a big list.
Jack Noseworthy
You might have seen him as bully Eric in the Brady Bunch movie, the Outer Limits, Justin in Event Horizon, Randy in Idle Hands and in the Jon Von Jovi music video. He has been with Sergio Trujilio since 1990.
Jaason Simmons
Australian actor best known as Logan Fowler in Baywatch (1994-1997) got married Irish actor John O'Callaghan and adopted an Ugandan boy in 2006. He was recently in Sharknado.
Darren Hayes
Hayes was the frontman and singer of the pop duo Savage Garden, Hayes married a childhood sweetheart, makeup artist Colby Taylor, in 1994. They got divorced in 2000 and he married (via a civil partnership) his boyfriend of two years, Richard Cullen, on 19 June 2006 in London. The 1997 album Savage Garden peaked at No. 1 in Australia, No. 2 in United Kingdom and No. 3 in United States. It spawned the singles "I Want You", "To the Moon and Back", and Australian and US No. 1 "Truly Madly Deeply".
Chad Allen
He played the infamous Tommy in St. Elesewhere, Zack in My Two Dads (1989-1990) and Matthew in Dr. Quinn, Medicine Woman (1993-1998), he came out as gay and has since done GLBT movies. In November 2006, The Los Angeles Daily News wrote in passing that Allen's real-life boyfriend, Jeremy Glazer, was also in the film Save Me. In a September 2008 interview with Out.com, Allen stated that he was currently in a three-year relationship and had been sober for eight years.