A Game of Three

I'm usually lucky. Too often I meet unsatisfied women on my way. It's like a game of three in which one is bound to lose. Someone else, but not me. Except this time... I knew from the beginning that I had begun to play by someone else's rules. It started out as usual: an unsatisfied wife, a millionaire husband willing to do anything, a luxury apartment. Their strange wager in which I was to be a puppet. And a gun... Would I be able to finish this round with dignity, or would my adventures come to an end after all...?