Early impressions are (not) hard to eradicate from the mind

His name´s Juan. I met him when I started high school, we were classmates.
His appearance was strange for me. He was bigger and taller than me and my other classmates and he also had long hair. He was always alone and he seemed to be lazy and not very sociable. He used to talk about music that I had never heard before.
I had the chance to get to know him better when we had to work in the same group for one of our classes. Despite the fact that we were so different we got on very well and by the end of that year we had become friends. I realized that he was generous, sincere and sensitive as well. we've been best friends for thirteen years now.