Revenge: Injure the Enemy One Thousand, Damage Yourself Twenty Thousand

How can I put it, I felt weird after watching it. I watched it a long time ago. The female protagonist and male protagonist were okay in the early stage, but in the later period, the female protagonist felt like she had become wise. Later, the male protagonist did all kinds of excessive things to him and she forgave him. I didn't understand. The male protagonist just said that he didn't know and he didn't forgive him because he didn't mean it. The female protagonist But my life is about to be lost, and if it weren't for the male protagonist, the princess and the female protagonist would not be like this, so I don't understand why there is a female protagonist. The male protagonist is responsible and independent. He obviously paid a lot of love care to the female protagonist, but later married the princess and treated her coldly, but later gave him hope. I don't understand.

Please take a look, look, look, look, please