Heavy bump to get over (rocd)

So. No amount of reassurnace will help me with this, a whole bunch of people have told me I've done nothing wrong... Honestly everytime I try to explain it outloud and make it make sense to people I talk to, the more I realize it doesn't make sense and I don't even know how to explain it. What happened is I spoke with a coworker while a thought of them being a "rebound" popped into my head after a worry regarding my boyfriend cheating on me (we talked it out, it was just a misunderstanding) was stressing me out. I didn't say anything inappropriate or do anything inappropriate, but because I had the thought in my head I felt as if I had somehow been flirting with my coworker. Or that I felt more comfortable talking to him (I have false attraction ocd and avoid men like the plague) primarily because of that rebound consideration, which would make it flirting. But, the thing is, is that I've slowly been feeling better in the first place talking to that coworker once the false attraction theme stopped, I can't tell if this was the thing that made me finally feel ok or not. I have no idea. I can't confidently say whether or not it was, but either way it made me feel like I was flirting somehow. It doesn't really make much sense and there's no use confessing to my boyfriend because he's set up a boundary regarding me confessing to him. He also overthinks and understands confession makes ocd worse, so he thinks it's better for both of us to just not discuss my instrusive thoughts, especially because everytime he tells me I did nothing wrong, I try to convince him that I did do something wrong. And this would obviously confuse him and I'm like 99% sure that I did nothing wrong. The issue is that I don't know how to get past the FEELING and THOUGHTS that I did something wrong. It's like the logical part of my brain is drowning in a sea of ocd and anxiety, and each time it takes a breath of air, I think clearly and logically, before it goes back under and I start to get anxious again. It's like I can't make sense of the situation been I feel anxious, guilty, and I feel like I did do something wrong somehow. I don't know how to explain it but its really bothering me because its like I FEEL like I did something wrong rather than KNOW I did something wrong. Does anyone have any advice? Radical acceptance kind of makes me feel as if I'm just accepting that I did it and am a lying cheater. But at the same time I almost feel like I'm lying to myself and that I did do something wrong and am just using OCD as an excuse (even if so many people have told me otherwise). How do I get past this??? It drives me crazy and I desperately need some advice. It's like I go throughout my days and feel this sense of doom, like I can't even look forward to me and my boyfriends future because in my mind if I tell him this then he's gonna break up with me, which Idk why because I don't think I did anything wrong but also I don't think he'd even break up with me??? I feel a pit in my stomach constantly, like I'm hiding something from him, or that I really did truly somehow flirt. It kinda helps for me to play out how he might respond to something like this- with confusion, telling me that I didn't flirt, but that maybe I shouldn't have jumped to conclusions so quickly about his snapchat.. It helps me ease the anxiety because really, thats how he's responded to my confessions in the past (up until I stopped). But any other advice or tips? I just want to move past this. Weirdly enough it has me hoping that I have a new trigger so I can just forget about this one lol