Need real advice

My boyfriend broke up with me a few days ago. It wasn't something we wanted but life was getting in the way it started to become harder to see each other and spend time together. We had been drifting apart for a few months and we both knew it. We just loved each other so much that we kept trying to make it work. In the last month or so of our relationship he opened up to me about how he felt lost in himself and didn't know who he was anymore. He said he was miserable in so many parts of his life and felt like he was bringing me down. I fought for our relationship plenty of times but in the end I could see how much he was struggling and things had to end. Even though we didn't want it to. We both agreed to give each other space to figure out where and who we want to be in life. I've tried to confine in my friends and family but of course they give bias advice and think I should move on and be happy. I want to be happy to but I'm feeling so lost. I don't want to move on incase I risk losing the chance of getting back together and my heart is always reminding me how much I love him. But I also don't want to deny my self great opportunities by waiting around. Now our relationship is over I've realised I really wasn't being treated fairly at all and there was a lot of things wrong on his end. Some on mine to but I guess that's why everyone that cares about me doesn't want me to go back. But it doesn't make me love him any less. We were together 3 years and spoke everyday. I feel like a terrible person putting me first and doing things for myself because I always put everyone else before me. I WANT to stay but I know I NEED to go. My heart is fighting with my head. I know what's right. But what's right isn't what I want. I really just need some outsiders advice or experience.