Why do I feel this way?

I don’t know if this post will even be seen since it is not a popular subreddit, but I just want some closure, or at least something to calm me down. I am going into my next year of school (will not be naming) and have known this teacher since last year. I was in his general employability skills class and he taught history in the past. I got onto a rocky path at the beginning with him, getting numerous lunch detentions (totaling four by the end of the year) for various things. I have ADD and blurt out, do things, etc. He never despised me and I believe he took a real liking to me.

My favorite subjects are history, theatre, and colorguard, but we would talk most about history in his class. He would occasionally pronounce theatre wrong and we would jokingly bicker on that, since he was an overall pretty lax and chill guy at certain times. He also would quiz us on our history questions and knowledge to prepare for upcoming tests, exams, and overall big finals. I am very knowledgeable when I want to be, so of course I studied on questions that he was not even directed towards me, but towards the grade above me.

I would talk to my friends and family (mainly my mother) about what happened in class with him and what went on. My mother called me obsessed and said that I was in love with him, as did my friends (even my best friends). I would always help plug the chrome cart back in during class to help out, gathering computers from around the room so he could go do ISS duty on time.

Around the end of the year, class got more chill and relaxed so I started to just mess around a bit more. He would call out “Giggle pants over here” whenever I started to laugh uncontrollably at something he, or someone else did in the room that was funny or awkward. I really cherished my moments in that classroom, despite what everybody said. He also had done lunch duty every day, so we had interactions then too. He called my art good and used the term of “creative” once. I would always start to do my art for my history class (prior to that period I had him) in his, so whenever he walked by to pass out papers, he could see it and comment.

Time skip to this summer, around July 7, I got my advanced courses list and emailed him, as he had inspired me to go for advanced history. He told me congrats, as I had got into advanced history. He also included, along in that email, that he might be going to teach advanced history again the year coming up ahead. I got really excited and crossed my fingers that I would get him.

Time skip to today, I got my schedule leaked from our school work app, toddle, and I am very disappointed. I did not get him, but that is not the main issue. I didn’t get the first pick, second pick, or third pick of mine. I wanted him, the head history teacher, or someone my friends have had. I really hope schedules change and I get him for advisory or see him at lunches as I can’t bear not seeing him at all.

He was one of the only ones who’s ever noticed me in such a way, so of course I am going to feel attached. I am very sad and I do not know what to do. Courses come out officially on August 10, then we have meet the teacher. Please help.