help please!!! sorry its a long one.

okay so im a senior in high school right now and in 6th grade, this kid developed an infatuation with me and then proceeded to stalk me for the next 6 years. He tried to entice me with gifts, and rides in his dad’s camaro, and compliments on my appearance and by bragging about his own personal achievements. he would follow me around school or walk me to my class when i asked him not to. he tried to get to me through my friends and by playing little mind games that drove me crazy. he asked me out multiple times and i declined every single time and i declined to give him my phone number or snapchat. he tried to guard me from contact with any other guys he saw me talking to. this went on for 6 years. he caused me so much emotional and mental disruption that i couldn’t learn to trust anyone including my current boyfriend until the walls i put up for him were forcefully knocked down and i learned to trust again. I havent told anybody except my boyfriend the pain he caused me because it’s too difficult to talk about. he finally moved away at the end of junior year and his final words to me were “if i never see you again, have a nice life.”. now here’s where it gets even creepier. I often have dreams in which they feel real, and then they actually come true. sooo i had a dream over the weekend that he came back to my school to visit and i woke up and had trouble breathing all day because of the anxiety caused by a simple dream. nonetheless, 3 days later, i am sitting in the common area of my high school when i hear people get up and scream with joy. i look over, and it’s him. standing there in his red tshirt looking exactly how i remember and i packed my shit and ran away so fast. i had an anxiety attack simply from the sight of him and i almost collapsed into the wall passing out. i was shaking and i was gasping for air and i was crying. i thought i was going to die. i ran to my boyfriends band room and waited for the bell to ring so i could get help from the only person i really trust and he was great with it but the whole time waiting i was paranoid of him showing up again. i hate this grip that my stalker has over me. if i’m debilitated at the sight of him, he has so much power to do whatever he wants. how can i help resolve this problem?? i thought ab a restraining order but i would have to see him face to face again and i would rather not for obvious reasons. and i can not talk it through with him because he lives in a different state and i never want to talk to him again. any tips would be greatly appreciated. thank you so much.