Simon didn't like you, and you didn't like him either. The difference is that Simon was a lieutenant on task force 141, he had authority to do whatever he wanted without being questioned and he used that to his advantage. Simon didn't think a woman on the task force would be any use, and he showed it in the worst possible ways.

"27, 28, 29...C'mon, my men do this with their eyes closed." Ghost counted, feet on your back as he made you do push-ups, but of course, with his extra weight on top.