Any advice?

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!

I’ve done things in the past few years that I’m not proud of - only a couple of things I can think of and they didn’t directly hurt anyone at least with is relieving (but maybe indirectly they sort of did or could’ve which makes me hate myself because why did I do that… *how* could I do that…) If I could back and stop those things from happening, I would. I may not have thought about what I was doing at the time, so I didn’t really recognize that they weren’t okay, but that doesn’t excuse them, and I would smack some sense into my past self if I were able. I feel like if anyone knew what I‘ve done, they wouldn’t want anything to do with me. They’d write me off as worthless. And maybe they should to be honest. Now yet another thing has come up - I haven’t done anything, but I had an intrusive thought pop up that made me *think* about doing something and this would be unforgivable in my opinion. Though, to be honest, the things I’ve done before are also somewhat unforgivable in my opinion… 😞 Regardless, I don’t want to do it because I don’t think it’s okay, but I worry deep down that I do. Or that I’m looking for an excuse to make it okay to do. I don’t know, it’s complicated. And I’m upset I even thought about it. I wish I had never seen the thing that triggered that intrusive thought. Yet another thing I would stop if I could. I’ve tried to not think about it or focus on it, but it doesn’t work. Even if it goes away, it just comes back again. I just keep thinking about it and it’s overwhelming. Anyway all of the guilt of this is killing me. I feel like an irredeemably terrible person and it makes me want to give up. I can’t get on with life because it’s paralyzing. I don’t know what’s wrong with me, and at this point, it feels like I don’t deserve to just move on. I can’t live with myself and I feel like I don’t deserve anything anymore. I know a lot of this is probably OCD, but I’m not sure all of it is and I don’t know what to do… if I spoke to a therapist about it, I don’t think I could bring myself to say what I’ve done or what thoughts I’ve had. But if I was told to move on by someone who didn’t know the truth, I would worry they wouldn’t really say that if they knew. Agh, it’s all just a mess 😞

So i had really bad pure ocd but recently it’s been sooo much better but i’m in a relationship and me and my bf dated before about 2 years ago then we broke up and now we are back together but i’m having an issue where i will try to go back years and find something i did wrong and i really do not want to find anything to feel wrong about or guilty specifically something i may have done wrong to my boyfriend but the thing is i’m a good girlfriend and i’m very loyal so i don’t want to ruin something for me because of my past if that makes sense like i can’t remember doing anything wrong but my brain keeps going are u sure let’s look at all your interactions with people and it’s so annoying i just wanna live my life in the present does anyone have any tips