I trust that things will continue to go well for you and your wife with the new bull. The fact that you have already enjoyed such a relationship is an advantage. The initial introduction of a bull can be a bit problematic, depending on the personalities of the husband and wife. They must surrender their privacy, and exposing one's intimate sexual life can be awkward at first. You and your wife are well pat that stage, of course, so it comes down to you two and the new bull feeling comfortable with each other.
Bulls would do wonders for many troubled marriages, if only couples would take that route.