Confessing ocd

I have been battling ocd for over a year now and it likes to switch themes. Currently, it’s attacking my relationship with my girlfriend who I’ve been with since I was in high school over 10 years ago. It first began as an intense feeling that I have to leave or break up with her over dumb little things. Then it changed into a lot of guilt for having any thought about another girl. And the worse is feeling this intense guilt for past things I’ve done in the past while in this relationship. We were so young and I was teenager, but I often found myself watching porn, fantasizing about real other people in my life, and getting off to other girls that I may have known. When I was younger I didn’t think it was bad and that it was just a normal teen boy thing, but 10 years later I have so much guilt about it. And yes I’m with the same girl now. We’ve had our ups and downs, but I know I love this girl and I’m ready to propose to her soon. Anyway, these past mistakes I did when I was younger make me feel like a cheater and I can’t stop ruminating about it. I feel like I have to admit every detail and person I’ve ever had a bad thought about. I feel like if I propose to her and don’t tell her everything, that I’m a lair and didn’t give her the full picture. And the other day one of the girls I thought was hot when I was younger, came up in convo and I just went downhill. Now she knows I deal with OCD and she is very supportive, I’ve told her before that I did some bad things, but never all the details. And that’s all my brain keeps telling me to do. I have so much tightness in my chest and just want to be able to breathe again. But everyone says to not admit or it’ll reinforce the cycle, I’m just not sure how everyone else does that. And at the same time, maybe I am a cheater and just simply a bad person. Idk! I never cheated physically or anything like that, but my past mistakes feel like I did. But again I may just be a bad person! Please if anyone has advice or is dealing with similar things, I’d appreciate the help!

This is my first post & I’m terrified. I have not been officially diagnosed w ocd yet but in a nutshell - I confessed some things I felt guilty about to my husband about five months ago. ( nothing too major ) but in our past, 20+ years ago I was unfaithful and it caused a LOT of harm, which I told him all of that back when it happened. But in recent months, I started getting consumed by guilt. I couldnt eat or sleep until I finally broke one night and told him all these recent little things I felt guilty about. Acting flirty, etc. And for him it like brought back allll the trauma from 20 years ago which I didn’t know would happen. But it’s so bad. He says he wishes I never told him. But even w that, I still feel like I keep thinking of “new things “ I did in the past, thoughts I had or dreams, or conversation w an ex,things like that. Because I am a Christian I also keep feeling like it’s the Holy Spirit telling me I haven’t told him everything and I need to. But I also know God doesn’t give us a spirit of fear .. I clearly need help, but I also want Christian based help so that it’s in line w what I believe ? I can’t eat and my anxiety is so bad again - I know if I confess more things it will keep destroying him, I don’t think he really understands or believes I have ocd. Thanks if you made it this far

FINALLY identified a core fear of mine and it is deceit and lying by omission. My biggest compulsions are confession & rumination. I immediately WANT to confess to whoever the theme is about, BUT since I am NOT acting on the compulsion (*yay*), I feel like I am lying by omission. For example, I will think of a mistake I made in the past, become anxious at the thought that my partner would break up with me over it, and then I want to confess so that he has all the information he needs to make an accurate decision on if he wants to be with me. Otherwise, I feel as though I am withholding pertinent information and his decision to be in a relationship with me is based on lies & fabrication. On one hand I am proud of myself for not compulsively oversharing / acting on compulsivity. On the other hand I worry I am stepping out of my values of honesty & integrity. Or perhaps worse, claiming “compulsion” in the name of hiding from the possibility of whatever consequence may result in me sharing the mistake. Any recommendations?