Master/Submissive BDSM Contract

I was a "e;Good"e; girl by all rights, then I had a boyfriend that forced me to do things. It started out as 'play' that I did out of love for him. It was simple, light bondage, soft spankings. I now look at what it has become, piercings in places I never dreamed. He started sharing me with others and takes discipline very seriously. When and how did I go from being a good girl to a slave girl?Ove...