This item at Blind Gossip mentions an actress who was playing all touchy-feely with her man at the Oscars, but only when the cameras were on them. During the pre- and after-party, when the cameras were not rolling, she was with her girlfriend. Her public relationship is just a PR stunt.
She will not come out of the closet because she fears that she'll lose her fan base and industry support.
The only way a closeted lesbian could lose a male fan base by coming out is if she were a sex bomb that they're all jerking off to. Nobody in Hollywood is that hot. No one who gets into the Oscars, anyway, which excludes mere eye candy actresses. In fact, coming out might actually titillate a sex-crazed male fan base, who'd start picturing her getting it on with some other celebrity babe.
That leaves a female fan base, who have invested so much of their lives into following her as a role model. How would coming out as a lesbian shatter their faith in her? If her roles had primarily been about a down-on-her-luck kinda gal who meets Mr. Right and everything works out great in the end. Discovering that they had been trying to imitate the love life of a lesbian all along would ruin the last hope they had of finding their prince.
The only good guess in the comments at the BG post is Jennifer Aniston. Most of them are moronically guessing Oprah, who is not an actress. One clue pointing to Aniston is the phrase "so sweet," perhaps referring to her recent drama Cake. Another clue is that "she really wants to win an Oscar more than she wants you to know the truth!" Someone pointed out that Aniston made headlines recently with the phrase "We know our own truth," referring to her relationship / engagement to seemingly closeted homosexual Justin Theroux.
Pictures of them show zero chemistry, which technically just means they are a sham couple, not necessarily that she is incapable of chemistry with men altogether in real life.
Still, check Google Images for pictures of Aniston and Selena Gomez, whether at the recent Oscars after-party or in numerous other occasions. They look way more into each other than Aniston and Theroux do. There's another set of pictures from Sunday's after-party of Aniston and Amy Adams looking tender together.
The blind item didn't say that the actress' girlfriend was famous herself, so I don't claim that Gomez or Adams are Aniston's girlfriend. It's just to point out how much more open and warmed-up she evidently feels around other women.
I'm happy to say that I never did get the whole Jennifer Aniston craze. They tried to make her a sex symbol during the '90s, and I even watched a few episodes of Friends just to see what all the hubbub was about. Nothing. Talk about being over-hyped. I didn't know any other guys who were into her either, but she must have had a niche following among doormat types.
I do understand her appeal to aging single women, and that makes me think it's her. She would lose industry support because her whole schtick is the rom-com princess, something that absolutely does not allow for a lesbian actress.
The Hollywood executives would lose so much money that could've been scored from churning out a dozen more inane Aniston rom-coms. And her fans would feel betrayed and led astray. "No wonder she has such trouble finding and holding onto a man!"
Lesson number one in finding Mr. Right: don't imitate the personality of a lesbian.