But don't expect an answer to that question anytime soon (or ever, for that matter), as the Mad Men actress is sticking to her guns about keeping certain bits of information, such as Xander's paternity, private.
"It's just not something the public needs to know," she tells Edit magazine. "I don't divulge my sexual preferences. There are parts of your life—no matter what your job—that should remain private."
Although the star's decision to keep certain aspects of her life away from the media shouldn't need an explanation, Jones offers one up anyway.
"When I was starting out, other actors advised me to keep certain things close to the vest. When you become a public figure people want to know everything about you, and then [they] pick it apart—it becomes negative," and added, "When my son asks those questions, I want him to [hear it from me]. I don't want him to be able to Google it."
The actress says that when she decided to become a mother, she " knew I would be raising my son alone," and says, "I was prepared mentally—and I was excited about it."
And that's really all that matters.