Should I tell my first love I still love him before college?

Me and my boyfriend dated for about 6 months and I broke up with him because I was afraid of my feelings for him. This was when I was 16 and the feelings I had were new to me so I was scared. We got back together last summer for about 3 months but we took a small break (even though we knew we would get back together) and during this break, he hooked up with a friend of his. He admitted to me while we went for a walk one night, and he looked very upset and felt awful, but it crushed me inside. I felt like my heart was torn to pieces. I didnt get back together with him, I should have but everyone told me hes not for me, what he did was wrong. ect. But in my heart I knew we were supposed to be together. A few months passed by and I was going to tell him I couldnt take it any longer and that I loved him, but I found out he had a girlfriend. A month of so later I admitted to him how much I love him and he told me he was sorry and that he was with his new girlfriend now, and I asked him if he would ever give me another chance and he said if its meant to be it will happen. We stopped talking for awhile, it was the only way I could try to get over him. He was in one of my classes but we never talked. Later in the year my friend had a party which he was at and I didnt mean to get drunk, but it happens. I hit my head really hard and he picked me up on the couch and asked me if I was okay. My friend said he gave me a look that made her think he still cared about me, but I was not about to talk to him about it. We started talking on and off again as friends. It has been about 6 months since that incident. Hes been dating his girlfriend for about 9-10months now and im still in love with him a year later and I dont know what to do. His girlfriend is going to be a senior in high school and him and I are both going off to college, but I am so much in love with him and its becoming unbearable again. I think of him 24/7 and the fact that I hangout with him as friends makes matters worse. Were leaving for college in less than a month and I want to tell him how I feel and how much I love him, but I dont want to ruin our friendship if thats all we can have. Everyone has been telling me if I confess my love for him again, ill push him away. That is not what I want to do, I just want to be with him, he is my first love and I cant get over him. I’ve tried! Can you give me some advice??