I don't think that is really true. The cuckold relationship is not between two people. When the cuckold becomes excluded and the relationship becomes exclusive, it means it went too far. I find it hard to believe that while it may have felt "natural" that this did not upset you greatly if your relationship was strong to begin with. This sounds to me like the sex, in your mind, overtook the love in the relationship and women know these things intuitively. Thus, she did not just leave you for the bull but probably would have left you anyway. From this perspective, it is not the bull to took the respect away from you, but you who gave it away to your detriment. Your saying that you "would do it again and again" reinforces my point that it was more of an addiction than an important relationship to you. Eventually all addictions lead to misery.