Why Marry if You Are a Call Girl?

I just finished reading Tracy Quan’s book Diary of a Married Call Girl: A Nancy Chan Novel. The description is as follows:

In this irreverent take on infidelity and modern marriage, newlywed topflight prostitute Nancy Chan finds herself struggling to adjust to the realities of domestic bliss. She’s honing her respectable image as the wife of investment banker Matt, cooking fashionable meals and taking his shirts to the cleaners. But now that she and Matt share a home, it’s getting harder to keep her career as an exclusive call girl a secret. Nancy fears what might happen if Matt finds out, but she can’t quite bring herself to give up her financial independence. And now Matt wants to start a family. Motherhood could jeopardize her business—and what will it do to her body?

Okay, I know this is just fiction but as I read the book, I couldn’t help but wonder why this woman was married if she was pursuing life as a call girl? Obviously, from her point of view, it is nice to have someone to care for you and at the same time continue with her current job. The risk factor is also probably a turn-on. However, you have to wonder what kind of cruel joke she is playing on her banker husband who is pretty naive and seems to think she is studying French all day while she is turning tricks instead. It would be one thing if she was up front about her work and told her husband what she did before they married to give him a choice about what to do but to trick him to me seemed sickening, making the storyline difficult for me to deal with.

If this were a man doing the same sleazy thing, no one would be that intrigued by it, in fact, many readers would probably think that “going Betty Broderick” on him would be okay. But when a woman deceives a man, somehow it makes for a mysterious story showing the complexity of women’s sexuality.