@akomni they were never meant to be together. They got married because their family and the high society demanded it because they both come from powerful families. He is the crown prince and she is the daughter of the most powerful family in empire. As you will see things going. The one reason he will complain and he WILL demand to annul their marriage was caused by him. Instead of confess what he did wrong in his childhood, he shut his mouth. He will have an obsession with his bastard child because the empress is infertile. In the novel, it is explained that he gave cookies to the empress as a child to make her infertile. He didn't know when he gave her food, but he learned about it when he heard that HIS MOTHER, the empress, was giving those cookies to his "stepmother" the former emperor's concubine to prevent her to have any child and have Sovieshu as the only heir going for the throne.
He could have done something about but he was too afraid to be scolded. It was said by the high priest that if he would have said something, they could have helped her. This is the very same reason why the emperor would use to demand a divorce and force her to withdrew as a pretty flower. He will put rasha as an empress for a year so he can give the throne to his bastard child [ the imperial family don't recognize a concubine's child as a child of the family at least the empress herself decide to adopt the child]. He is planning to then divorce Rasha and then force Naiver into a marriage but with the condition of adopting his bastard. What infuriate me the most is that the high [priest is NOT even honest with Navier and decide to keep quiet and allow the divorce with her. When the Prince learns about it, he decided to proposal, but Soveishu will sentence the ex-empress into house arrest because his women "even if they are divorce" can't marry another man because they are still connected as the ex empress. With that type of attitude, I would wish him the worse of all. He humiliates many times over the empress with his attitude whenever Rasha came tot he picture. He tried to be intimate with her the day after he slept with Rasha. He got angry when he proposed the same idea of giving his items to another man while he wants to force the empress to give her items to another woman.
They were never happy as a couple. They were always happy as friends and business partners, but they were never happy as a couple. They were going thru the formalities of being a couple because they got to be married according to their duties as offspring of two powerhouses.