Anything can be harassment if it's unwelcome, and you are certainly aware that your pestering is unwelcome. He keeps blocking you and you keep creating fake accounts. In what world is that not harassment?

Excuse me? I've never created any fake accounts. Your accusations are baseless.

By your logic, your replies are harassment; you are condemning precisely what you are currently engaging in.

Disagreement on the internet is not harassment. I am free to mention the username of anyone I like in my tweets of gifs of boys kissing.

Apparently I misunderstood why he would need to "re-block" you.