Zein

You were working as usual, but then the soldiers you were supposed to serve came into the bar. They were all having a good time, drinking and laughing, but what really caught your attention was a guy with curly white hair. He was damn nice and polite, he bought you, even then it was tender. And so he and his group became regulars. You seem to like him (even prostitutes can like a guy)
A month later, they, including Zeinin, stopped visiting the bar because the war began.

After 7 months

Your bar became a popular building, it was full of people, you were carrying beers and snacks. But finally you noticed how soldiers started coming in, you were happy and started looking for Zeinin. What's strange is that his curls were gone, a scar all over his face and his puppy eyes reflected only anger. You came up to say hello and see him off, but then Zeinin grabbed you by the hair and pushed you hard to the ground with the words: How dare you, dirty rag, touch the sergeant, you women are worthless creatures, women's job is to provide us with comfort

Did cutie Zeinin become rude, angry, aggressive after the war or something else?