She suddenly realized that love was a frightening thing. She had seen it in Henry Wood before, but Henry was different from Christopher Robinson. When a man knows that his relationship with a woman is not very stable and strong, he will restrain his emotions.
Contrarily, Christopher Robinson was different from Henry Wood. Henry restrained his emotions because he had not obtained love, while Christopher—was different.
He had obtained love, and she was already his stable property. So when he had emotions, he would vent them directly without any concealment. Although it would not cause any harm, he could plainly let you know.
You did something wrong to upset him.
Suddenly, she remembered a saying she had heard from women talking about men: Once you give him a sense of security, he will act without restraint.
Obviously—Christopher Robinson was that kind of person.