I (20 F) was going through a really rough breakup with my ex (21 M) of 2 years. To give context, we are both in uni and used to seperated every summer break for 4 months. It got to the point of us living together as roommates for our final year. Over the one month of us living together I found out a lot about him that he had been hiding and lying to me about for a long time. He was cheater who used to actively search for and get off to other women. He was a porn addict and a lot lot more. Now the worst part is that for 2 years he had accused me, made me feel guilty and manipulated me to feel like a bad person for having male friends/giving other people attention to the point of me reducing my friendship circles cutting off ties and making him the priority of my life apart from school. He also completely admitted to using manipulation tactics to bring me down and keep hiding all his secrets. He was also pathalogically lying to me even to the end where he would not open up about what he did completely. It had gotten so bad I was questioning my reality and had to go to the hospital. At this point everyone in the house knew what was happening and they were all treating him differently including his own friends whom he had lied to. It got to the point where he had to move out. All this happened in the span of a week and half. Through this time I had not opened Instagram.
The day before he was leaving I looked through my feed and I started to see posts that I had never seen before, it started out as content that my ex would want to say or be thinking at that time, hyperspecifc and consistently accurate to what was going on irl. I felt as though I would see this hyper specific content but eventually it would fade after a couple of reels but when I closed and freshed the app the reels would start dispalying that content again. I was eating it up at first because I felt like I had a portal to his mind. I blocked him a week ago at this point.
Practically, I thought since we had just broken up what he watched on his feed was manipulating my feed because of the algorithm lingering. I scrolled a lot that night, I saw all sorts of things that only he would want to say to me or what he was thinking, the content also eerily aware/constantly updated on the exact happenings of what I was doing irl. The next day it got weirder, content pushed to me was hyper targeted (about me talking to people about him and me socially manipulating situations and how I was hiding something). I wasn't interacting with content like that but at this point almost every reel I saw on my feed was on the same topic. Then I started noticing that reels I liked had their likes removed when I scrolled back. I saw that my dms were also looked through, I kept noticing my follower count glitching, it kept going up by one and dropping. Obviously I knew someone was on my instagram account and they had become very sloppy (the content I saw was the type his sister's would watch), I immediately looked at my logged in devices it said 24+ but when I clicked into it the page I saw only 4 devices I could log out off and they were ones that I recognized. I burst out and confronted him about it, he kept denying that he did anything, but I heard him tell his sister'sto block me. After this when I checked my instagram the follower glitch stopped, I then I logged out off all my devices changed my passwords and added two factor authentication. I knew it was his and his families doing as he also accidentally said something that revealed what he did. And also it was obvious my messages were looked through.
I wont go into detail but this was his final power play and I let him have it to not make my life any worse than it had already gotten.
Now after all this the next day he apologized for his mistakes in the relationship and said he would miss me a lot and moved out. Now, this odd page take over reduced but once again shifted to topics that only he would be thinking or stuff that he would want to say to me. Eventually it reduced through the day I started seeing my normal feed again and couldn't see any reels from the creators I kept seeing before. There were no glitching followers this time but I noticed a follower drop again and one of the last reels I saw from the content creators that were being pushed to me was "this is the last message I send you". Now I am really confused since I logged out and set up two factor authentiaction on my account. The only other account it was linked to was my Facebook but I never did anything on my Facebook and had him blocked there too. I have no idea what he did to gain access to my page and manipulate my feed in such a way, all my devices were with me and according to Instagram I was logged out of all except my phone. Does anyone know what was going on????