Probably both. Some just have it within them from the start and others get there through life experiences and reinforcement. Many, like my husband, get there later in life. He was very dominant when we met but slowly over the course of many years his love deepened as I became a mom to his children, his partner, and ultimately someone he loved and respected so deeply he was no longer comfortable, or even able, to see me as his slut, a greedy nasty women who needs to taken and owned every now and then. I think he knew this down deep, even subconsciously, and opened the door for me to get what he knew I needed even when I didn't. Once he witnessed what these black bulls brought to the table, how they transformed me at will, he too was in awe. A very smart bull realized this and slowly started to nurture this awe into submissiveness and then worship. I never dreamed this could happen but as I look back it seems the most natural, honest, organic growth of our relationship. I love him more than ever, as I know he does me.