@Psychronia ahh gotcha. He doesn't know how to multitask. I really think humans did wrong when they decided to use marriage as a contract to have an alliance. I think it would work much better if it were a contract done with the same sex...yes this marriage wouldn't have the definition of love or to make an heir and "unite" the lands and properties. Or if they did the marriage with the opposite sex. they should keep it purely a political contract. They could get lovers and have children but only one child that was created by those two in the contract could be the one to inherit the lands and keep the family together.
It could be easy to prevent and make sure that was their kids. the man and woman would be supervised by both families for a period of 6 months. That would have prevented the woman from cheating and have a baby of another man and that would prevent the man from denying that it was not his child or send men to violate his wife. Of course, humans are lazy and wouldn't want to invest money and time to make sure that would work. There would be proof from both families if any of the married spouses is sterile and could find a way to get a child and everybody would find an agreement on what to do next.
I am glad he fell in love because it is nothing nice to have children without the consent of both parents.