I kept dreaming about him when im trying to forget

I badly wanted to forget him because it’s too much for me. too much. I missed him every time and he made me feel so happy and loved and he doesn’t really know or does he?. I wish i could know what people think so it would be easy to forget and stay away from people. Out of all the boys I’ve dated, he’s the only outstanding one. I really loved him and still do. I want to forget but i kept dreaming about us together that i know will never happen again. I removed all of our connections through social. He was my friend and i had a crush on him until it grew. we’ve been m.u for a short time because I rejected him when he asked me to be his girlfriend because it felt too fast and i was talking to another guy then. He was my first love, i think.  Ever since i rejected him until now (2 years) i still like him so much. we talked last year because we were classmates again. But i knew he was only talking to me because he needs help and that’s it. I really want to know what he really thinks about me but i won’t waste my time about it. i need to forget and i will. i hope. I really need super painful advice.