Is it normal to love your teacher so much?

I'm sorry for the length, but I hope you'll take the time to read it.
It's been four years and i'm still head over heels for this man. He was my teacher, and the love of my life. As his student, I got to know him a lot, and he was just amazing. He would help me if i had problems with any other teachers, If i wasn't feeling well, he would be so nice about it. I also had problems at home at the time and i got depressed and quiet, when usually im very loud and outgoing, and he would always ask me what was wrong, and if i was okay...I regretfully never told him anything even though i think he could've probably helped me through it. Anyways, I started to talk and think about him all the time, and i still do. Basically my whole life revolved around this man. He knew i had a "crush" on him, my friend told him once, and he was flattered. He didn't act awkward or anything after that, if anything, it made us closer.
He encouraged me to do better in school, to do sports, to just be a better person.
I never called it love, always told myself its an obsession, it'll go away as soon as i leave middle school.
I left middle school and went into high school, and i still could'nt stop thinking about him. I went back to the school he teaches at many times with different excuses. He also had gotten married and now he has a child. The more i saw him, the more it killed me, so i stopped going there for a while but somehow something always brought me back..i always wanted/needed to just see him. Its like whenever i have another problem, i start to think about him and it makes everything so much worse. He's still the same sweet man he always was. He still always gave me advice about life and what i should do in certain situations. I care about him so much, and i would do anything for him, and that's why I'm here. I don't want him to risk his job and lose his family for me, i would never allow that to happen.I have never felt this way about anyone else. I do love with him, with all of my heart. I'v tried so hard to move on so many times, and in so many different ways but i cant...I cant stop thinking about him..
I've given it time and distance, and i'm exactly where I've been. So what do I do?
should I tell him? I dont want to tell him in hopes of starting anything, I just want closure and I feel this is the only way. Even though i don't think he would make things awkward around me, i would'nt be able to face him if he knew. But i dont want to be selfish and tell him if its gonna bother him. So should i tell him?If so, how?
or how do I get over him? Its killing me more and more each day. I feel horrible even considering telling him because we have a really good friendship and i know this will probably ruin it, but i think im willing to take that risk. I'm just so sick of crying myself to sleep every night, feeling like crap everyday. Iv pretty much hit rock bottom.