How to deal with intrusive thoughts in “realtime”?

Without trying to seek reassurance, I’m wondering if anyone has insight on identifying an intrusive thought vs reality. Something that’s always really helped ground me in moments of false memory ocd is clearly remembering the exact moment the thought arose and how it started as “what if I cheated and don’t remember.” Then the images come and are extremely distressing, but I’ve always found some comfort in coming back to that moment of “this started as what if.” It feels like my brain is almost getting more creative with the thoughts now, and I’ve been having probably the worst anxiety of my life the past couple months after another intrusive thought entered my mind. I woke up after a night drinking and thought to myself “did you kiss your friend and don’t remember?” (Didn’t happen, undeniably proved). The rest of the day I stayed anxious about other things I could have done and poured over all my memories of the night. Then the next day I finally had found some peace based on all the evidence from my friends who were with me that nothing bad happened. I then thought “what about when you went to the bathroom,” which I hadn’t really been thinking about before, and then my mind immediately started flashing with images of me performing sex acts in the bathroom with some person who has no name, face, details, or anything I remember about interacting with them. I think I’m just concerned that this was a moment of genuine memory recall since I hadn’t been thinking about the bathroom before, and it was more of a sudden flash of images and “did you do that” vs “what if you did that.” I’m wondering how others are able to identify that something is an intrusive thought vs reality.

I have just recently realized that I had SO OCD. This began whenever I was watching porn and had an intrusive thought about the guy in the porn. It was more minor at first, it was a majority of what I was thinking about throughout the day but it didn’t feel as distressing at first. If I had downtime to think about it, it would affect me but if I was just going about my day I wouldn’t notice it. I began going through the compulsions of checking myself. This lasted for a while until another obsession occurred. Then it seemed as if my SO OCD took a step back. I would have flare ups but they would seem to pass. Recently, I had a very bad night of constant compulsions and looking at pictures and imagining things to check myself. After that night it was very distressing, it affected me to the point where people around me began to notice and ask me if I was okay. One of the big reasons I was so upset was my girlfriend, we have been together for over 3 years and I want to spend the rest of my life with her. I was thinking “Oh my god, if I am gay I can never be with her.” I would sit and cry about it thinking I would lose her and that might life would change because I was gay. I finally had enough and talked to her and my parents. We did some research and I was so shocked to find out that I had a form of OCD, it was like a weight being lifted off my shoulders just knowing that other people have been where I am and that I’m not gay. However, I may have naively expected the compulsions and obsessive thoughts to go away now that I knew I had an actual problem. But I found that the compulsions and thoughts were still there and I was going to put some effort into getting better. I have researched and now know what to do when experiencing intrusive thoughts, yet I still have been performing the compulsions which is just feeding into the OCD. I find myself having intrusive thoughts and then start performing compulsions to see if they are true. What really bothers me is when I have an intrusive thought that tells me that I do like something. But when I think about it I have no desire to pursue those thoughts. However when I feed into the compulsions they just seem to feed into each other. It is like my OCD ignores all the things that I know I like and goes straight to panic mode. I am also trying to do ERP and am going to start doing my best to get better. Does anyone have any tips for not performing the compulsions no matter how anxious you are feeling and no matter how real the intrusive thoughts seem to feel?

I have this deep fear I’ll accidentally cheat on my long term partner. This fear was initially triggered a couple years ago after being at a bar with my friends where I enjoyed the attention of being flirted with by a stranger. Because of my enjoyment of receiving verbal attention, I began spiraling about what if I accidentally cheat. Since then I have made multiple confessions to my partner to seek reassurance, replayed events over and over in my head, spent hours googling/looking at reddit threads, and now I dread “bar like” situations where I know my partner won’t be around. Today I was triggered and have wasted about 4-5 hours of my day ruminating. Does anyone else with relationship ocd struggle with this fear and have any tips?