http://nymag.com/arts/theater/profiles/21647/index.html
She talks about, among other things, the start of her lesbian relationship. Here's a couple of excerpts:
When I steer conversation toward the subject, she stutters a bit finding her way in. “I felt like, I feel like, here’s what I feel: I feel like there was an enormous temperature spike, where I was on the front page of two daily papers, there was paparazzi outside my house. My girlfriend had English press on her parents’ lawn. Every person she went to high school with got a phone call. They bought her yearbook. They almost put me on the cover of People magazine. And then it died. Because there wasn’t really anything to say. I can’t remember in what context they tell people this, but if someone is chasing you, stop running. And then they’ll stop chasing you.”
The truth is, Cynthia Nixon has managed to do something perversely radical with her gossip emergency: She’s made her own coming-out story boring. She mentions her girlfriend in conversation, but in a way that makes it at once not a big deal and nobody’s business. She is both evasive and open, the way anyone sane would be with a stranger asking nosy questions. (And she’s very skilled at making me feel like a jerk for asking the more prying ones, with another facial expression: No, no, no, no.)