What does he want from me?

so I was hanging out with this boy for months. He had all the qualities I searched in a guy. Smart, kind, humble and so on… I thought it was a “top block:. I really believed we were supposed to be togheter. But things went worse. First he started to act distant without any reason. Short texts, few words. He was doing the less requirement for a relationship. In my head I was feeling “ok, maybe he’s only moody”. But this attitude was not for a day, it longed for weeks, and weeks became months. Surely there was something wrong with him. In all this relationship I’ve always had the shadow of his ex girlfriend behind me. She broke up his heart very badly, and he always told me that was difficult healing even after years. But I never thought he was still in love with her, just because she treated him so badly. One day I was scrolling instagram posts. And I saw he posted a new picture,one really cute of him . but then I read the caption ……. ” I miss your blue eyes”.
Guys, I’ve brown eyes. This was an explicit reference to his ex girlfriend. You can imagine how I felt, the world fell down under my feet. I really liked him, and I confessed I was a bit in love him. The right a bit that made me feel so bad reading what he wrote. It was like he played with me all the time just to have someone to be with. I felt so stupid. From that moment I started to act distant and I ignored him in many ways. But during these days he’s back to me, and he’s angry by my attitude. He gives me all the faults for this situation . He has this hate against me just because I ignored him. So this is for you, reader: why does he act like that? Why does he so angry with me ? What I should do now? How should I act?

*I want to specify : I never done anything like cheating, texting other boys,or even talking bad about him to others. I’ve always been so respectful with me.