I am a bull but would have no problem watching my wife with another man. For me it's all about being generous and giving to her needs. Wanting to see her have as much pleasure as she desires. Being a bull though I would not be into the humiliation side of it though. I know most people like to stick with what society tells you what the norms should be. But if a couple wants to vere off from those norms and do whatever they both agree to then there is nothing says they can't. Everyone's kinks are different and kinks come and go throughout life. As long as everyone is having fun and no harm to others then go be as kinky as you want however you want.