Why sometimes does it look like I dont care about my girlfriend?

So i play in a band, and we were having practice, and my girlfriend was there listening to us, then this girl around our age walks in, and my head tells me to cheat on my girlfriend with her. I know i would never do such a thing. And it bothered me for days. And i ended up telling my girlfriend, and tried to explain my ocd. It hurt her and she believes that the instrusive thoughts, are my thoughts so in that, i must feel something behind them. And she feels hurt because i explained to her the obsessive part of ocd and how this thought wouldnt leave my head. And she got upset knowing that i was constantly thinking about cheating on her. I cant help but feel its all my fault. And now that she doesnt understand i feel really guilty for my thoughts and they are coming more often and worse. When i was fine for months, but my ocd always acts up right as i get in relationships, then i usually tell my spouse and tell them i cant feel guilt for my thoughts or they will get worse. And they usually just accepted it and it was easy. But with her it seems she just cant seem to understand, ive tried to explain it to her countless times, she isnt willing to do research with me to help better understand it or anything. Maybe for my first ocd issue telling her that wasnt the best idea.

He loves me and complimenta me and saya beautiful things and does many things for me, he says he loves me and he is there for me, but me.. i cant even say i love you without doubting, i am doubting my feelings my atractuon for him, everything, i feel so bad, i dont want to be like this, i hate myself . He is precious and genuine and im scared im not, i have moments when i am happy … but rn i am sad. I saw him today. i dont know what i felt but as im writing this i feel guilt amd fear. Scared that i may be pretending. I want to be happy, what if im not happy with him.. it cant be.

When my boyfriend and I are apart, it honestly feels like I've lost all feelings for him. I start questioning everything, wondering if I even love him at all. Then, when we're finally together again, the memory of those earlier doubts creeps in and completely ruins the moment. I get so caught up in overthinking and analyzing my feelings that I can't even enjoy being with him. It's like I'm constantly second-guessing myself. The worst part is, sometimes later, when we're still together, I do feel the love. But then the anxiety kicks in again! I start worrying that I'm just faking it because I had those doubts earlier in the day. It's this endless cycle of questioning, doubting, and overthinking, and it's exhausting. I'm really struggling to stay present when we're together, and it feels like this constant cycle is preventing me from truly connecting with him. We have been together for three years and we love together, and I just started feeling this way about a month ago; it’s been almost every day since. One day, I randomly thought about breaking up with him. Our relationship is healthy, especially compared to my previous toxic one, where I was anxiously attached for two and a half years. My boyfriend is very supportive of me. I have talked to him about my doubts and everything I’m experiencing, and he continues to support, care for, and help me through it all. I am very grateful for that. One aspect of my current relationship that I would like to improve is our communication, but we are both willing to work on it together. I often find that my overthinking leads me to question whether I really want to try to fix things or if I’d rather just continue as we are. This creates a constant push and pull in our relationship. Has anyone else experienced something similar? Any advice on how to break this cycle and just be present in the moment? I'd love to hear from anyone who's been through something like this.