I live with my wife of 43 years; I'm retired from shipyard type work. I told my wife in the very beginning of my fetishes and she tried to but just wasn't "into" it. I guess I was about 6 or 8, maybe 10, around that time.
Real People Real Bondage - Male Submissive
Pretty vanilla. I work for a tech company and currently live with just my dog. Probably when I was about 15, or so. Submissive. Not being in control excites me--because it scares me.
I couldn't say when I first realized in terms of an absolute moment, but I've always found it positively delightful when my lover would pin me down, and it quickly escalated to restraints and other household necessities-- like ballgags and blindfolds!