I feel so crazy right now please help

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 don’t know where to begin, this is going to be very long. But whoever responds I appreciate you dearly. I’m 20 years old, I’ve dealt with a lot in my childhood with abandonment and insecurity issues from my family. Aswell of not having a role model of a healthy relationship shown to me as a child. Me and my boyfriend have been together for 3 years, my first healthy relationship. Last year I discovered OCD (I am diagnosed but I ignored my mental health as a teenager like anybody would) I started to get these feelings that I don’t love my partner/he’s not attractive enough/ etc etc. I’ve discovered that it’s ROCD. I made threads on Reddit asking for advice googling for reassurance, all the things as one would do with ocd (as I’m doing now!) One day I woke up and that theme was gone, I felt normal in my relationship for about 4 months with no terrible thoughts. As of about 2-3 months ago, my theme switched. Now I have a fear he doesn’t love me, he’s cheating, he doesn’t want to marry me. It has utterly consumed me (just like my last theme!) I check his phone an unhealthy amount (guess what I never find anything!) He always lets me go through his phone, but as anyone would he gets annoyed and frustrated. I always am searching for signs if he’s acting weird, will get into arguments 24/7 because my brain keeps telling me he’s cheating, I get fake scenarios in my brain, hell I even bought Snapchat+ to stalk his snap score. But ever single time I find nothing. A lot of things trigger me and I over analyze everything, phone calls who his texting. When I do search his phone I check his EMAIL because of how paranoid I am. When I see things on social media about people cheating I SPIRALLLL But what really triggered me was this scenario, his family loves to joke around with me and mess with him at the same time, especially with our relationship, saying I have a leash on him etc etc making jokes (which I can take but when I’m in an ocd spiral and they have no idea something’s are triggering) anyways, we were out to lunch and his mother texts him “are u at some girls house” he told me straight away then responded “why would u say that” then she proceeded to say she’s messing around with him. And sent a picture of me and said I’m with Hailey at lunch, then they had a normal conversation after. Obviously this sent me into a spiral, it still bothers me. I was so upset and anxious, when we got back to his house I went through that man’s phone like it was my only job in the world. And I search EVERYTHING not one thing goes untouched. (I sound insane) anyways we went back to his place, then he called his mom to come in his room and asked why she said that, she felt guilty and said she was messing around she had her hands in her head (mind you she’s been drinking probably just messing around with him when she texted that) she told me not to worry ever about that kind of stuff because her son is not that type of man, she proceeded to leave the room then texted me about how sorry she was and didn’t mean to freak me out and felt like shit about it. Ever since then she’s been acting kind of weird towards me (not really) maybe she’s uncomfortable or there’s another women idk LOL. Anyways yea what the hell do I do I literally can’t function properly.

Hi all, I’m new here and this is my first post. I was diagnosed with OCD back in March and started therapy, but was only able to complete a few sessions before my therapist had a baby. I have been in a relationship with my girlfriend for 11 months and I’ve constantly been thinking about her past. More specifically something she told me that happened while her and I were speaking. In just two days it will be a year since she told me about the fact that she was assaulted by someone she met online. ( we both met online). It took place while we were talking. Originally when she told me, she told me she had sex with a guy she met online she told me she went over to watch a movie and then they had sex. Recently after we discussed it since it was weighing on my mind, she revealed to me that it wasn’t consensual and that she was sexually assaulted/raped. She told me she initially thought it was sex because it’s what she was sued to from her last relationship. She was abused and assaulted a lot by her ex, and this thing was normal for her. She said she didn’t realize how bad everything was until after we had been dating and she saw what true consensual sex was. The problem I have is that my brain knows every detail of what happened but keeps blaming her for her. My brain keeps telling me it was her choice and her fault and it justifies it by saying that she went over knowing it was a possibility he would want sex, so therefore it’s her fault. This has been straining me for so long because I can’t stop thinking about it. Everything seems to trigger a thought about it. I know inside what happened and what led to it, but I constantly think about it possibly being something else. I constantly think about every little detail. It has led me to having thoughts of “maybe I shouldn’t date someone that did this” as it doesn’t match my definition of the “perfect partner”. I have no idea what to do anymore. I obsess over things she had done with her ex in order to be loved by him. Like drinking, smoking weed, etc all things that I am against. I know she doesn’t do this anymore and was coaxed into it, but I’m constantly overwhelmed by thoughts of “she isn’t perfect because of XYZ so I shouldn’t be with her”. I won’t go into any details about the assault out of respect for her. I feel I’m constantly fighting myself and every good day I have gets overshadowed by one bad day :( I cannot see my therapist again until August and it worries me a lot.