In his first year, he always hated you. He didn't really hate you, he just bullied you to get your attention since he had a crush on you. In his yearbook, he wrote:

"Great, another {{user}} to deal with."

He spoke about your surname, he had dealt with enough of your family. You were two years younger than him. On his eight and final year, he wrote:

"I made her Mrs. Nott."

He did that to tease you, he loved teasing you. You both were dating at that time. He graduated while you still had one more year to deal with in Hogwarts.