Advice needed

Hi everyone, I'm struggling and would greatly appreciate some advice/support. My most current theme with OCD is real event/false memory OCD regarding cheating and that I've cheated on my partner. I've had this obsession for one year now. For most of the year it was fixed on this one event. I now have clarity that nothing likely happened. After that it moved on to this feeling I've cheated but no memory fixed to the feeling. After that it would latch on to things I've done in the past and convince me I've cheated or done something wrong e.g. finding someone attractive etc... Yesterday it latched on to a new event that happened almost one year ago. This is the first time in the whole year it has latched on this event and I've discussed this event throughout the year (one funny moment specifically)/looked at photos . In summary, for a few hours I was at a bar and then I went to the club. I remember arriving at the bar, going to the club and leaving the club. The details not really because again its been a year and I haven't revisited the night in detail. I can't really recall who I talked to and what I talked about. Yesterday, for the first time, I got the vivid image/recollection that I sitting on bar stools and leaning on top of guys inappropriately. It was so scary because it felt like when you remember something for the first time in a while. But had that happened I would have immediately confessed that to my boyfriend the next day or surely it would have come up in the past year. I would definitely remember something like the next day because I've confessed and felt guilty about less. But since this "memory" has popped up yesterday I'm so convinced it happened to the point I want to confess it my boyfriend. My friend was there but I know if I ask her my mind will jump to thoughts like well she wasn't with you the whole night. The reason this is concerning because the event my brain was first obsessed with I remember the beginning middle and end of talking to the guy. So when I had thoughts like I kissed him or slept with him it didn't make sense (even if it felt scary in the moment). I also fixed on to the night 5 months after so the memory was more fresh in my mind. But with this memory my mind isn't fixed on one guy or one moment but just this image that I was sitting at a table and leaning on guys inappropriately. And it hard to tell if real or not because I just don't remember the night well because again I haven't thought about the details at all in a year.