My ex slutshamed me and now getting married by dumping me

I met a girl 4 years ago online. I was in a relationship before in which he wasn't serious and just had fun out of me. But that girl I met made me feel good. I left that another guy because he wasn't serious and sexting 10 different girls simultaneously. And started dating that new girl{ashley}. Ashley was a good and we fell in love in just 2 months and it felt like heaven. She was a workaholic and she actually made me a better person initially. We both never been into the same sex relationShip before. After some months she saw my previous boyfriend profile through my Id and actually met a guy to whom I used to talk as friend but like I developed this habit of cursing and I started cursing a lot( reason being I joined another "funny group" where there were lot of cursing Words and shit). There she saw my dark side of dirty talks and all. She instantly started cursing me and slut shamed me. Even though I deleted everything and did everything in my power to made her realize i changed but she never listened. I was 15 and she was 23 at that time. Since then She fought with me every single day and slut shamed me about those past mistakes daily. It got worse with time. She used to smack her head in the wall and scar her body with anger. I used to feel so hurt because the longer I stay the more she cursed me and cried. I never cheated on her but she always believed I did and slut shamed me with the same or worse words I used when I talked to my ex friend. She started using those words everyday to shut my mouth. I was so much in love with her that even after saying goodbye I came back to her.. I talked about her with my family too. Apart from that She hid everything from me.. even her face and work. But she claimed she loved me more than anything. Everytime I tried to share some love she would way I'm acting and shut me off ... We deteriorated each other in four years.. she lost all of her hard earned money by trading because She had a fight with me. I ALWAYS felt like a curse in her life but couldn't go away in the hope of feeling loved but I always ended up hating myself on the things I did four years ago. Now, I prepared myself to go to another place and she tried to stop me but two days later she said she's marrying a guy because I am a slut and she ruined her life being with me.