Cheating OCD or real?

How do you know it's a false memory/OCD and not something that actually happened? I feel like a terrible person. I'm a very creative person, and the more I stress about whether I did this bad thing the more it seems real. The worst part is is that I have no way of reassurance without sounding crazy. I have ROCD and I randomly started obsessing over the 7 months of our relationship whether or not I've cheated on him. Even though I love him more than anything and I would never do that! I'm constantly triggered by coworkers or classmates that I've previously found attractive or liked and/or I know they've liked me or flirted with me. I'm at the point now where I'm rereading simple texts/straightforward texts of these people asking me about school work or if I could cover a shift trying to find proof of something I can't remember. My partner knows about my OCD and is very understanding and supportive. I feel like I'm living a lie. When this first started my rational brain knew this wasn't real, but the more I become obsessed the more it becomes more distorted. I feel guilty for being happy. I just want to be guaranteed it's not real so I can move on with my life. It's moving to specific people now and it's scaring me how real it feels.

How do I get over real event/black out OCD? I got a memory of 1.5 years ago. I memory I hadn’t considered since my OCD began. I had recently gotten together with my boyfriend who I am still with. I went out drinking with some friends at their house by myself (stupid I know) I remember the night up until most of the end, when I was with my friend. We were alone briefly, outside. Then I blacked out and woke up in my bed and in my house and didn’t remember how I got home, but I knew my friend had something to do with it. I remember talking to my friend in the morning and he just thanked me for coming over and I thanked him for helping me get home and that was that. I felt guilty for blacking out but never considered that I did anything wrong in that period of time. But I have cheating OCD, so I was worried during the black out period if I did something with my friend to cheat on my bf? I got so paranoid and I didn’t have any memory of any kind of inappropriate behavior other than drinking. Especially because when I get really drunk I fall asleep and fully “black out” . Otherwise I have some flashes of memory here and there. I was also trying to replay the memory (I know it’s a compulsion) and I was starting to distort the memory so I called him. He had assured me I was just passing out from drinking too heavily and he ordered me an Uber home and that I probably fell asleep in the Uber which is why i fully blacked out on the ride home. And that the only time he and I were alone was when he was waiting for my Uber to get me. His story goes along with everything I remember too. Combine that with that I’ve never cheated, I am not attracted to my friend, and I always remember some sort of sexual contact I have with others even when drinking. There are flashes of memory here and there. And that there was no physical evidence left behind of anything. My body was fine the. Next memory, no stains no bruises. Nothing. None of that was present. I know that reaching out was a compulsion, but I had to because it was a real life event that had the potential to be immoral and I feel a duty to pay for any wrong doing I could have committed. I know uncertainty exists, and I will never get 100% certainty on anything. This is the closest I will get to evidence of me not being a cheater. But how can I move on from this? I don’t want to confess to anything I believe I haven’t done. It’s not in my memory, witness testimony, or in my character. I’m just not a cheater. I know that is a compulsion and i will not rope my bf into my obsessions. But that urge is strong. So the question is, how do I move on from this? I want to be able to say “I’m not a cheater, I’ve never cheated” without feeling like a fraud. I feel like a garbage person for not having the confidence in myself and for having to reach out and use the memory of my friend to help me out.

Has anyone experienced False memories with cheating ocd? I have this memory that I kissed a friend while I was super drunk but he said it didn’t happen and so did my other friend who was there. I’m terrified and feel awful and guilty and I don’t know what to do.