C18 Why did i become like this?

Why did I become like this?

Even though I had already finished class, I couldn't bear to refuse him when I saw how eager he was to learn. Thus, I nodded and sat beside him.

Because I was wearing a yoga suit, with a large and loose collar, I bent my head a little to reveal the deep groove in my chest, and in front of a young man, my movements were a little more restrained.

I don't know why