Is the cat out of the bag?

Well, last night, as I was talking to my mother, she mentioned that my ex had said that "you treat him like a woman, so that's why he acts like one", referring to me. I did a double take, and asked her when this came up, and she said it happened during their fight the day before. I'm not sure quite what to make of this, but it could mean things are about to come to a head with her on the transition issue. Wish me luck.