Hi @Beefsteak95 this sounds like a tricky situation..
While I have not personally been in this situation I understand where your feelings are coming from, especially if you have a bad experience with your ex.
Is this the main reason for considering being on your own? Or is it a mixture of things?
While I don't have much advice on this particular situation, I do have other friends in relationships that have stayed friends with their ex and have kept old photos just for memories. While someone may have moved on from the person, sometimes the memories shared with them can still be appreciated.
Have you sat down with your partner and explained how you feel? Maybe if he knew how much it was hurting you he would reconsider? 🙂
Sorry if this advice wasn't much help, I just wanted to check in to make sure you are okay