Her friends (granted, a self-selecting cohort) are just as randy as she is, though not all seek out external solutions—to their detriment, she believes.

In myths, novels, and films, from Helen of Troy to Hester Prynne in to Diane Lane in 2002’s_ Unfaithful, _the affair of the rare philandering female is the centerpiece of the story, and its punishments are draconian (the Trojan War, ostracism and branding with an A, being cast in In the real world, with greater professional equality between the genders and third-wave-feminist sexual liberation, are women cheating for the same reason that men have throughout history, as Megan’s profile suggests—that is, to sate their sex drives and gratify their egos? "Megan has picked Coppelia, a Latin American diner at the border of Chelsea and the West Village in Manhattan, and she’s waiting in a booth when I arrive.

In the spirit of this gender reversal, I invite you to picture me as Carrie Bradshaw, sprawled out on her bed with her Power Book G3, as she voice-overs, "I couldn’t help but wonder: Are unfaithful women the new adulterous men? She recognizes me from my profile photo, and I slide in across from her.

Megan prefers younger men whom she can think of as her "boy toys—my playthings." She asks how old I am.

I tell her 33, and she points at me and says, "That’s my perfect age." Later she clasps her hand over mine for a few seconds when I make a joke.

"The more financial independence women have, the more it correlates to how unfaithful they’ll be." When Biderman launched the site in 2001, he predicted "that the Internet would be the second massive jump and usher in an era where women would behave like men.

Ten years later, having built a female brand, I think I was right."Ashley Madison now says it has approximately 6 million active members in thirty countries (about 4 million in the United States).

TO BE TREATED LIKE I WAS THE LAST WOMAN ON EARTH BY A HUNGRY GROUP OF MEN, PREFERABLY ALL [ethnic group whose male members are often hypersexualized in American culture, due in part to a complex legacy of discrimination]!!!!!!!!!!!!!!!

BIG THICK [rhyming masculine body part] NEED APPLY!!! My first e-mail blitz, which doesn’t specify that I’m a journalist hoping to interview subjects, nets me a grand total of zero replies. I change tack and name-drop Yet a few replies roll in. (Identifying details have been obscured or altered slightly to ensure anonymity, and all names are fictitious.) She lists her weight at well over 200 pounds, her limits are "Anything Goes," and her tagline is "I’m too much for you." And what is she looking for? I’m not here at AM to meet someone for the opera, I assure you."What the hell is going on here?

What, exactly, is compelling these married women to set up "sexy dates" in droves, aside from easy Internet access?