Cynthia Nixon gave a very candid interview with the May issue MORE magazine about Sex and the City movie (Yay! Yay! Yay!), her divorce and her current relationship with her live-in girlfriend.

Nixon also revealed to Good Morning America today that she was diagnosed with breast cancer two years ago and explained that she didn’t want to make it public then so paparazzi wouldn’t follow her to the hospital.

On turning 40: “Turning 40 was a very real thing for me. I felt it in a way that I didn’t when I turned 30 or 35. Forty was a peak: I could look forward and I could look back. I had to start thinking, the decisions I make count, and what are the thing I want to do? [Singing was something] I was definitely afraid of. It’s incredibly revealing and intense. Part of it was that my mother is a wonderful singer, and she encouraged me as an actress, but with the singing?-not so much.”