Breakup advice/tips :(

After being together for almost a year, my ex bf ended our relationship. He was my first love. I told him that he never truly loved me if he is able to end it like that. He said I was wrong, that he did love me but the reason why he ended it was because he had lost the emotional connection with me and that he was trying to get it back but could not. It's been 4 months and I'm still completely shattered. I thought he was the one. I just sometimes I don't get it. I really tried hard and gave him my all, and he was the first boy that I felt comfortable and myself with. It's exhausting having to think about him and the memories everyday. Having to think that I wasn't able to do more to save the relationship. But then I also realize that I deserve better because he easily gave up on me and I shouldnt waste my tears on him anymore. It's still hurts though.