Knowledge of Mikulski's preferred type of "intimacy" was widely known even before she was a Senator. . . that's like "outing" Barney Frank.
I have to say that I had not heard about her sexual orientation, but I have seen photos of her, and I don't think it was possible to "out" her. The news flash would have been if some drunk guy had wanted to "be" with her.
Mikulski's a lesbian? Who knew? Next thing you know, someone will say that Martina Navratalova, Ellen Degeneris, or Rosie O'Donnell are lesbians...
As an aside, as an avid "The Man Show" watcher (Juggie Nicky is my personal favorite!), Jimmy Kimmel went to some gay pride parade and went around to lesbians asking them if they found Rosie attractive. Given the responses, she's lucky to be in a relationship, because none of the lesbians interviewed would have been interested.
Mark