I would say born. When I met hubby and we started sharing fantasies, his fantasy (starting at an early age) was to be a sex slave to a couple, meaning his wife (which was to be me) and another man. Even before his first sexual experience, he wanted this. As a bisexual, he started sexually servicing older guys; I was his first girlfriend. We did not know it was cuckolding, but I started having sex with older men (I was 18 and attracted to men in 40-50's, so was he) while we were engaged. They were all white, so it was not a racial thing for us. Admittedly, going black my sexual pleasure improved significantly and cuck hubby became even more submissive.