Post breakup

My boyfriend and I were together for a year when he went to college at the end of the summer. I'm a senior in high school and ever since he left for school our relationship fell apart and I've been a complete mess over it. He came home Friday for break and we hung out the entire weekend and talked everything out. he told me over and over again that I was still the one and that he was going to make it work this time and he loved me just the same. Then today we got in another big fight and he told me that he's sorry for lying but over the weekend he tried so hard to love me like he did before and it just didn't work and that we were just too broken to ever be fixed. He told me I need to start moving on and be happy because he doesn't want to hurt me again in the long run. He was my first everything my first love we were inseparable and did so much together. We had so much planned for the future I honestly feel like my life is crashing down on me. I have been sick to my stomach and nonstop crying it feels like it will be impossible to move on. I NEED tips advice anything from anyone who has gone through a breakup and felt like this. Please help!!!!