I ended a long relationship

So I was in a student with high ambitions. Went on to a big city for better education, where I met this guy (let's call him D) who was from my hometown and known to me. He helped me alot during my stay there which was 10 months, supported like a friend. My mom totally loved him (my father didn't however). After 10 months when I came back home (homesickness) as studies were available here too, he proposed to me. I denied (though I liked him too, but felt too overwhelmed).

My mom convinced me into loving him back as he is a nice person and will keep me happy, our future would be good, etc.

I accepted and started dating.

I always believed that we will complete our studies and earn nicely then will get married.

Let me tell u about him: He was dreamy, he did things that even books can't capture, made my the queen of his kingdom. My friends would get jealous of the things my boyfriend used to do for me. He made me his entire world, lost himself in the process, he stopped talking or hanging out with his friends, he left his friends infact. Stopped any activity which won't include me, used to call me for hours everyday, had nothing in his head other than me. It made me feel special but suffocating after some time. He almost stopped studying after we got together. Kept on worrying about me by being insecure in our relationship. He kept on failing exams and did not remorse. I decide to fail too to be not too ahead of him (as I was younger) and lost 2 years. He became more n more possesive and insecure, calling me constantly even on exam days. He didn't like me having any male friends, hanging a lot with people, having a celebrity crush, even male cousins. He started abusing him self in front of me, death threats if I leave him.

I loved him to death so would never leave him anyways. I kept on consoling myself that he will get better once he accelerates in career but it never happened, neither did he make a career nor the insecurity decreased.

All of my friends loved him and our relationship was ideal to everyone, the abuse part was always a secret and he was the sweetest person in front of the world.

8 years into the relationship, he got an entry level job after which his parents started making marriage pressure on us. My mom convinced my dad, took 6 months (I lied too to salvage his reputation) but he was never happy me marrying him who's not at par in terms of earning and status.

I started having panic attacks, his family's intentions felt suspicious, I felt something is off. I took astrological help (don't judge me I was asking universe to give me a sign) got nothing but negative predictions like divorce and death if marriage happens.

Too much to handle, I left him.

I don't know if I did right or not.

My heart betrays me and says he was the one for u and u won't find love again.

HELP!