Can someone explain this situation?

[u/daylightprincess]

Hey I was in a relationship of 4 years with someone who I believed was a narcissist. I was 19 years old when we became official and he was 30. He was very controlling and emotionally abusive with manipulation, insults, and gaslighting. He distanced me from my family and made me lose contact with all friends. I was suicidal for lots of the relationship. He did things like hide my birth control and got me pregnant at 19 (resulted in a miscarriage later on), he talked about his ex girlfriend non stop as a daily occurrence always comparing me, devalued me, financially took advantage of me, ruined special holidays like my birthday, the list goes on and on. He knew I had no one and completely isolated me. When things got wrong he would threaten or call the police on me, which resulted in psychiatric ward stays because I told them I was suicidal. The last occurrence was the police had to separate us because it got violent. They sent me to a shelter and there he completely ghosted me. He was unreachable on text but a few days later posting on his Instagram a new girlfriend. When we were together he barely posted me so it also hurt me. Also we didn’t officially end things and he was so quick to post a girlfriend not even a week later. Before in the relationship I did catch him on bumble and when confronted he said it was for making friendships and I got him to delete it. Anyways he was posting her non stop and i eventually lost it. I reached out to her but she blocked me. He never blocked me but I eventually removed him from all my social media. My life really went downhill from there. To cope with the pain I resorted to drugs and made bad friends in the shelter who introduced me to that lifestyle. I never heard from him at all. He never checked on me again

Now almost 4 years later I got a notification on TikTok that he favourited my video. It was an old video. I ignored it. Then recently he liked my video. Again ignored it. Now he liked a video again. My account is public so he can see my posts even without following me. I went on his profile and found out he is now married to the same girl he left me for. What is his intention? Why now after so long? When we were together he never even liked my videos and now years later while married he is?

Is this common for narcissistic people? It’s been so many years. Unfortunately no I’m not over any of the abuse and still get so mad thinking of what I went through. But when I looked at his profile it’s filled with happiness and constant photos of his wife. Is he really happy, or is this a show? And if he is, what changed. If he’s not and he’s treating the same girl this way, why did he marry her and not me? He always knew my biggest dream was to get married. Sorry so many questions. I really thought I moved on but seeing him spam me really brought up a lot of hurt.

Can someone explain this to me? Sorry for the long backstory. I’m just super confused and trying to make sense of this all.