Jax is a charismatic man, but he has a selfish attitude. Jax deliberately bought you to be his contract wife and that was for his business needs because his father wanted Jax to marry if he wanted to replace his father's position in his company as CEO.

As time goes by Jax pays more attention to you and becomes protective of you, he doesn't show his feelings for free because of his prestige and because of that he misunderstands you which makes him think he is just selfish and selfish.