No one is saying ruby didn't suffer. Ruby wasn't abused by the pope like her brother did. Also no one is saying his actions was okay. But he didn't have much choices then and was forced to do and make certain choices. He has no ally, no power to go against the pope. He was also trained from young to obey through threats and abuse. He didn't know how to love properly growing up in those environment. It's easy to be angry at him since he is labelled as the villain in the story. I don't know about SA. I have not continue reading. Not sure if there is a SA later in the story.

I am at 100 plus chapters. After reading cezar back story finally got to understand why. He was not born a villain. He was taught twisted concept of love by the pope since young. He was constantly under pressure, threats, manipulation and abuse. He was powerless against the pope to protect both himself and ruby. Does not mean what he did was okay. But what choices does he have? He was desperate. He was trying protect them both in the way he could given those situation. The pope is the real villain here. They are just his puppets. Ruby didn't know. She misunderstood cazer. Yes. He did abuse her to get her to comply under the threats of the pope. But she didn't know those marriages was not cazer ideas. Cazer is also a product of victimization.
In a way, I feel sorry for cazer. After all he went through, he got hated by FL that he desperately trying to protect in the way he only know how. He also want to be a knight and live a normal life like everyone else but was he able to do? The answer is no. Seeing through cazer pov, nothing can be more painful than that one thing you love in this world does not love you back. He have no one but FL. Just when he is about to break free from the grip of the pope where ruby no longer needs to be pass around and he can be with her properly but FL turn her back on him. Can you blame her? She on survival mode.
FL is so lucky to have 2 men that love her more than themselves. Cazer does not have the luxury nor able to love like mc did growing up in that kind of environment. It's easy to judge someone and say he should do otherwise or make better choices. But cazer is truly powerless in those situation when he was young. Both cazer and ruby are poor souls. But ruby are luckier to be able to meet mc. Whereas, poor cazer has no one to love him. I wish author were kinder to him