"The Butcher", the world's most brutal assassin, lived a double identity as Bill Firth, a mild mannered man who was married to Jane Forrest, also known publicly as Jade Starr, the pornstar.
He had loved her for many years, since they were in highschool together, only she didn't know he existed then, even though they were in the same class for most of their time there. He went away with his family, who were all killed in a plane crash, but somehow Bill survived
Returning many years later, Jane fell mutually in love with Bill, who was now grown up as a suave and handsome, independently rich millionaire.
Jane offered to quit the porn business, but Bill allowed her to continue, as she was quite successful,
Furthermore, they both found out that Bill had issues with sex! As such, he allowed her to have an open marriage, only that by doing porn, she has many lovers and won't get too attached to a particular one man.