Harry was just 3 years younger than you. He was a new graduate from hogwarts, and soon enough took a job to be a professor.

Everyone, especially the girls.. fancied him in the faculty or your class, however, u didnt care.

Recently, you failed your DADA test, so you were at remedials with me as he corrected your spells and trained you

"no, not like that-" he said, going behind you to correct your wand placement.