I Hate Him, I Like Him?

I'm a girl in grade 7 and currently like a guy.
Last year he used to tease me.
I didn't really mind. He only said that I'm quiet during class.

I hardly knew his name, but half-way through the year I started to crush on him.
It took me a while to admit it to myself.

I claimed to my friends that I hated him from teasing me but one of my friends didn't buy it. In the end I convinced her.

Now in 7th grade he is in my sport group.
I sometimes think he stares and I stare back. Then he looks away.

I can't even admit it to my friends that I like him.
We like the same things as far as I know.