Need help!!!

Why it so hard to get over somebody you love like first love first person to live with first to do everything with basically 😩😩 he was so good to me in the beginning then everything changed he started treating me like shit cheating on me kept going back to his babymama had TWO kids while we took a break but everytime I try to leave he makes me feel bad 😔 I just need help with moving on completely being done blocking doesn’t help either