It depends on which Stephen Hughes you're talking about:
Stephen Hughes (physicist), head lecturer in physics at Queensland University of Technology in Australia
Stephen Hughes (politician) (born 1952), British MEP for North East England
Steve Hughes (drummer) of British band, Big Big Train
Stephen Hughes (footballer born 1976), English football midfielder, played for clubs including Arsenal, Coventry City and Walsall
Stephen Hughes (footballer born 1982), Scotland international footballer, played for Rangers, Leicester City, Motherwell, Norwich City
Stephen Hughes (footballer born 1984), English football midfielder, played for Brentford and several non-League clubs
Nothing is known about the sexual orientation of Stephen F Austin.
Nothing is known of the sexual orientation of Stephen F Austin, the American empresario.
He is straight.
Stephen Fry is openly gay.
No he is married to a girl
Stephen Sondheim is openly gay. In an interview with CBC, he talked about coming out at age 40.
Stephen Lewis, the Canadian actor best known for his role in the television series "Waiting for God," was not openly identified as gay. Throughout his life, he maintained a private personal life and did not publicly discuss his sexual orientation. As a result, there is no definitive information confirming or denying his sexual orientation.
Stephen Caffrey, an American actor known for his roles in film and television, has not publicly disclosed his sexual orientation. Information regarding his personal life is generally kept private, and there are no confirmed reports about him being gay. It's important to respect individuals' privacy regarding their sexual orientation unless they choose to share it themselves.
The character of Flapjack is not written with sexual orientation
Nothing is known of her sexual orientation.
The Joker's sexual orientation is not written into his character.
Soko's sexual orientation is heterosexual/straight.