Vito Russo said this quote

Any story dealing, however seriously, with homosexual love is taken to be a story about homosexuality while stories dealing with heterosexual love are seen as stories about the individual people they portray. This is as much a problem today for American filmmakers who cannot conceive of the presence of gay characters in a film unless the specific subject of the film is homosexuality. Lesbians and gay men are thereby classified as purely sexual creatures, people defined solely by their sexual urges.