Description about a person who I hate.

I'm going to describe a person who makes me feel really angry. When a person tries to talk about him, my blood gets boiled and the sky turns in a storm. He's nineteen years old and, physically, he's so different from me: thin, spiky hair, dark skin and brown hazel eyes. It all begun when I started my relationship, because that person, who makes me puke out, still in love with my couple. In fact, for many months, he was calling my with anonymous number and speaking badly to other people about me. At the begining, he didn't care about him, but It made me feel really angry and sad at the same time. I think he hates me because I have achieved what he couldn't. Actually, I don't mind about him, but sometimes, I think about what I've done to him for hating me.