likeit, cuckold activities can only last "harmoniously" in a marriage if EVERYONE is getting something from it. Your marriage & spouse should come first, always, unless your marriage is already falling apart and you don't care to preserve it. And, if your marriage IS in trouble already, you shouldn't be dragging another person into the fray of your marital problem. If your husband has problems with you going out on extended dates with Bulls, you should respect and address his concern(s). You and your husband decides what conditions are acceptable to you being other men.
The Bull is there to provide a service your husband can't or won't provide you ... that's ALL! You show him gratitude for his service by thanking him, occasionally buying him appreciation gifts on special occasions (birthdays, Christmas, etc). But, he doesn't call the shots or make the decisions as to the arrangements, other than for conditions that are "safety" concerns for himself, like using condoms if he wishes.
Remember, these cuckolding arrangements are to enhance YOUR pleasure. Ultimately, the successful continuation of this arrangement, within your marriage, depends upon your wise decision making. So, play considerately with everyone's happiness in mind. Mac