I like this guy...But I need help?

Hi! Mary's SISTER here. I kinda hacked her account because I'm too young for an account. Anyway, I'm in the 6th grade and I like this guy named Hunter but a lot of people hate him because he selfharms and he's weirder than the other kids, I guess. We already dated a year ago when people just thought he was a bit strange. Now, they hate him but love me! I don't get it! And I still really like him! Would it be weird to leave him a letter anonymously? Or will he be freaked out and tell administration?