Movies
Warner Bros UK
The assertion came after the character's sexuality was debated in the Los Angeles Times and on various internet entertainment sites.
According to the BBC, Singer remarked that Superman was "probably the most heterosexual character in any movie ever made."
The president and publisher of DC Comics Paul Levitz said, "We were all scratching our heads. He's not a gay character."
Superman Returns opens in the UK on July 14.
More: Movies
Movie Reviews
'Extremely Loud & Incredibly Close' reviewTom Hanks features in a long and winding journey through New York after 9/11
At the Movies
David Lynch: 10 reasons to worship himIt's time to celebrate director David Lynch as the BFI screens a season of his films.
Movies Interviews
Max von Sydow 'Extremely Loud' interviewActing legend Max von Sydow on Extremely Loud & Incredibly Close, The Exorcist and Flash Gordon.
Box Office Charts
'The Woman in Black' wins UK box officeThe Woman in Black beats The Muppets and Star Wars at the the UK box office.
