Rebound after rebound.

Over a year and a half ago, I met this guy in high school. I initially had no attraction to him but as I got to know him for two weeks, I grew attraction to him. Until he broke up with me saying he is not looking for a relationship. I understand. We are young. Since then, I tried to rebound that worked temporarily, but ultimately because I have do many classes with him, my attraction ends up toward him. He said before he has no romantic feelings for me. Yet I catch him sometimes take glances at me. He also blocked my on Instagram too so I think he genuinely have a distaste for me. I wanted to message him and ask how he's doing. But it's been so long (year) since we actually talk even though we sat across from each other everyday. I miss him, and wants to move on. But part of me also still want him as well :(