Its been 2 years since we broke up.

Hi. I’m just really curious if there is a chance to get my ex boyfriend back, even if we broke up 2 years ago. I’ll try my best to tell my story in a short detailed paragraph and I appreciate anyone who will respond to this.
My ex and I met when i was in 1st year college and he was my senior. It was during our semester break and I joined a Play, and he was in there. He got attracted to me and i didn’t mind him at first; but because of his sweet and gentleness, i got attracted to him. We started dating. I was 16 and he’s 19 at that time. I never really had a boyfriend and he was my first, and I’m not really used to having someone who cares for me like that. I’m used to being alone and independent, and he was really clingy and always give me his attention. (He’s also sensitive and tends to isolate himself when feeling down). Btw, he is a really attractive guy that most girls actually fall for him. (I really don’t like it, I’m jealous and I felt insecure). Anyway, during our relationship, I was really focused on my studies because i have to maintain my grades for my scholarship. We also have different schedules. he starts school in the morning and ends in the afternoon; and I start in the afternoon and usually go home at 9pm and he always waits for me outside school to send me home. Long story short, as time goes by, he is falling out of love for me. maybe it was because I gave him little attention because i was really stressed with my studies and I am not really used to being in a relationship. (I have a really hard time to express myself through words and actions + I don’t know how to act like a girlfriend). Instead of him going out with me, he goes out with his friends. He doesn’t do the usual thing we do. Our messages became dull and shallow, like just asking how’s our day. When I ask him to go out, he said he’s not available at the moment. Until one day, he asked for a breakup. At that time, I didn’t know how to answer and I didn’t know how I was supposed to feel. I asked him what’s wrong and he told me “I don’t feel like you’re my girlfriend”. I couldn’t answer him but I was really hurt so I made a rash decision and agreed to broke up, which I regretted for months. I really think we can fix our relationship. We lasted for almost 5 months. Night after that, I messaged him and told him that I love him and apologized for what I didn’t know I did, but he didn’t reply. That time, I became bitter and hated him. Months later, he messaged me again and tries to compliment me, but I was so mad at him that I told him “we don’t have anything to talk about anymore” which i apologized for the next day. He didn’t replied again. And another month came, He started to see someone better than me. (though I think she really resembles me). That was the time I tried to move on because at that time, I thought he got over me. I really think that they really suit each other. I lost hope. But they didn’t last long because the girl had another guy and I learned that they were not actually dating at all. They just shared mutual feelings, but i don’t know the reason why.
I still see him as school, especially when I was hurting and trying to move on. (my NC days). There were times that I or my friends caught him looking at me and smiling. Whenever our eyes meet, we just exchange smiles and say hi and nothing more. But last week, I attended a General Assembly and we saw each other. This time, much closer. For the first time again in my life, I fell in love with him again. We did the usual thing, just smile at each other and say nothing. Even though it’s been 2 years, I still couldn’t forget our relationship and I still feel that regret. If only he can read this, but I’m too afraid to do so, because I don’t know how It will turn out. This is actually my last school year (S.Y. 17-18) and i will graduate soon. And I won’t get another chance to meet and talk to him.

PS: When I read about the 5 steps. I actually felt we were both victims. I just typed these things because I still am a bit confused and unsure and I want somebody to confirm if my instincts of us getting back together is right or not. Should I message him? Or should I still wait for him to message me. Should I move on or not? Does he still love me or he’s still in love with the person whom he was seeing after we broke up?

Anyway, thank you and I appreciate your patience in reading my story.