She is an idiot. After being deceived so many times, you still can't learn to be smarter. The same trap can fall into it N times.
He is a very smart man. Because not only can he deceive others, he can also deceive himself.
[I don't know how to write copy. Basically, the heroine has a crush on the hero, but the hero doesn't appreciate it at first, and then violently abuses the hero]