"He whipped, she snapped,” is how the New York Post titled its expose of Priority Investors LLC's Manhattan investment banker Edward Sonderling whose girlfriend Frankie Santiago “embraced a role as live-in fetish slave” playing out “bondage fantasies" similar to the ones student Anastasia Steel and Christian Grey play out in E.L. James' erotic novel – and upcoming film – Fifty Shades of Grey.

Santiago, also known in the bondage-domination S&M community as “Althea Lyn,” was arrested Monday and charged with stalking, criminal mischief and aggravated harassment after having a “knock-down, drag-out” fight with Sonderling at the East 57th Street apartment where they lived. Santiago (27) recently found out Sonderling (53) is training other “Anastasias” on the side.

Santiago and Sonderling — known as “King Eddo” on Manhattan’s BDSM circuit -- where regulars in the Fifty Shades-style local scene where King Eddo bragged about being a “whipping aficionado.” According to the Post, Santiago (Althea Lyn) -- who had been a live-in “fetish slave” for about three years -- was once whipped at a downtown fetish event by Sonderling who shouted to the audience, “She has had a lot of practice. I whip her every morning before breakfast.”