Worried again

Hi all I wanted to come on here and share this story because it’s been bothering me for so long. My fiancé knows of my hyperfixations and such, for instance I love reading dark romance books and I loved reading smut books for a long time and in November of 2023, about 3 ish months before I met my fiancé I downloaded an app called Character ai. I used the app for quite a bit and then I got really attached and decided to stop using it because I would be on it foreverrr, the same would happen to me when I’d read my dark romance books, I’d get too invested and I’d forget to do things so I stopped them all together. About 3 ish months after my fiancé and I started dating he got a new job that changed his schedule, and I wouldn’t be able to see him until the weekend so I got back into the app to have some hobby while he was at work. I’d write romance/ dark romance/smut stories with many different characters or just enemies to lovers stories because I thought it was fun and I could cater it to my liking if I needed to edit anything. Again I got too invested in these stories and then I remember at one point I grew out of the app and I deleted it in November of 2024. Then one day randomly I had a thought like “Wait what if that’s cheating?” And I spiraled. I was compulsively googling and researching to figure out if it was or not and I was having bad anxiety for days. During this time period I had a really bad issue with the “M” word and explicit content, and as time went on I realized I’d do it because of anxiety or stress as a quick relief, and I’d sometimes use this app to do it as I’d read my smut stories and such. I remember one time as well I panicked because some people were like “What if it isn’t ai and it’s real people” etc etc. For months I panicked and I went to my fiancé multiple times to talk to him about it and every-time He’s reassured me that he doesn’t consider that cheating because it’s an ai chat bot. Just back then when I played this app when we first started dating we never discussed playing certain otome interactive games and such and so I just thought of it as a hobby like how I’d read my dark romance smut books. Even though it’s almost been a year and a half since I deleted the app I’m so scared and anxious because of the thoughts “What if I had cheating intentions when playing this game? What if back then I played the game for malicious intent?” Just all thoughts along the lines of this and it still worries me to this day because my biggest fear is hurting my fiancé’s feelings :( I just don’t know what to do and no matter how many times my fiancé reassures me I still always get anxious about it and I’ll cry and break down because of it.