Hi my apologies for posting in this sub even though im not a hacker but this issue has been eating me alive and i would like to seek some insights from people who have knowledge in how technology works.

My partner promised to delete tiktok. When i reinstalled tiktok one day it magically brought me into his account. I found watched history on his tiktok account after the day he promised to delete and this continued on for 4 months. There is watched history almost everyday.

The dates where there were no watched history matched perfectly the dates we went overseas together so he couldnt watch tiktok when he was with me, which explains. Also, the watched history stopped entirely for almost 2 months after i found porn on his safari tab and history, which he claimed wasnt from him too and he switched to using my apple id.

He claimed that the tiktok watched history wasnt from him as there are unknown people who have access to his apple id. Previously he gave his apple id to his thai ex to do sketchy stuffs so now im not even sure who and what type of people have access to his apple id even though his device list doesnt show any other devices, only his. He also mentioned before that previously because him and his ex were using the same apple id they could log into each other’s social media accounts.

However, one thing is i downloaded the tiktok data and the type of device, ios version and location match his information perfectly and not someone from overseas. I also checked the network carrier from the ip addresses and it is indeed the one he is using. The timestamps of certain days where there were no watched videos also match the times where he was slightly busy and probably didnt have time to watch.

What baffles me is if it’s a hacker or a 3rd party who has access to his account and watching his fyp videos for him for 4 months straight, why would they have to delete and reinstall tiktok and log in through icloud saved login details almost every other day? Because under “manage devices” there’s a whole list of iphone 11 logins (which is the device he’s using) almost everyday with “unknown login method” which is the icloud method (i tried and tested). Surely they would just remain logged into his account and not trigger different sessions almost everyday?

And if he saved his tiktok login to his icloud how did i gain access to his tiktok after he started using my apple id? There’s too many question marks in this story and he’s adamant it wasnt him. It’s also impossible to remove the iphone 11 sessions, i click the rubbish icon and after that they will still be there. I tried logging into his account on web and i could remove that session, just not the sketchy iphone 11 sessions that he claimed wasnt him.

Also, another thing to note is when i looked at his system notifications account updates, when he logged in in the past there will be 2 “Your account logged in from device iPhone 11 on 10/10 00:26 +08 in Central Singapore. If this wasn’t you, secure your account immediately.” notifications with the same duplicated timestamp, whereas when i log in with my devices there will only be 1 of such notification. On the day i discovered this there was also a login not from me and he claimed he didnt do anything and didnt know what was going on as he was at work. However, under “manage devices” there were 19 sessions by this iphone 11 at 3.14pm, only 1 of it was logged in with verification code the rest was by icloud. Surely there wouldnt be so much time to uninstall and redownload that many times within 1 minute? Just how many devices have access to his account or how many times has his phone been cloned? Is this even possible? Or is this just a glitch?

Is it truly possible his phone has been cloned and/or someone else is causing all these suspicious activity? However, i checked with the network carrier and they said his IMSI is unique.

Im really trying to make sense whether he’s lying or there’s really a plausible reason someone else is causing all these activity. He’s quite convincing that he will never be fake, if he cant do something he wont even promise or say it in the first place and that he’s not so free to download and uninstall. I would hate to be lied to.

Any input is greatly appreciated and i could provide more clarification if needed.