Really struggle to understand why this happened to me in the middle of such a good relationship.

I don’t understand how my boyfriend can love me so much after everything I put him through. He constantly shows me how much he loves me, yet I feel like I can’t fully appreciate it. I can’t explain how badly I behave towards him when these thoughts take over, how often I lash out because of them, and how many times I’ve told him exactly what’s on my mind. He tries to use logic to help me, but it never seems to work. And now, even as I’m writing this, I feel like crying—yet at the same time, my mind tells me that I don’t care. This horrible feeling inside me won’t go away. I keep thinking, “What if I don’t like him?” That thought is always there. I wonder if I had unrealistic expectations about this relationship from the beginning, since he is my first boyfriend. What if I convinced myself I liked him just because I wanted my first relationship to be perfect? And now, I just can’t accept the truth? It scares me even more knowing that he moved to my city for me. I feel like I’m constantly upset, constantly sad. And despite everything, he’s always there for me. That makes me feel even worse because I don’t know what to do to feel okay again. Every time I talk to him, I get this strange feeling inside me, and I’m terrified that it means my thoughts are actually true. He tells me that my happiness shouldn’t depend only on him, that I should focus on more than just this relationship—because for over a year now, my mind has been stuck in an endless loop of questioning whether I love him or not. He asks me, “Who are you fighting? Why do you care so much? You’ve been asking yourself the same question for over a year—shouldn’t you know the answer by now?” And my response is always, “Because I want to be with you.” But then, when I try to answer whether I like him or not, more doubts take over. I start thinking, “Maybe I just can’t accept that I don’t love him. Maybe I just want to keep this relationship perfect.” The worst part is that he has never done anything wrong. He has always been patient, kind, and loving, yet I feel so lost. I don’t understand what’s happening. I don’t understand what I feel. And I don’t understand why I can’t understand what I feel. He also tells me that ever since I started reading so much about relationships and OCD online, I have gotten worse. And he’s right. I have become much worse than I was before. The problem is that before, I thought I was at my worst, but looking back, I was still able to feel happiness at times. Now, I feel completely stuck. I don’t know if I’m crying because I hate this feeling, or because I don’t want to think this way about him. It feels like I don’t even know what’s happening to me anymore.

I’m so confused if the breakup was the right decision I felt so confident about it in the moment but now I feel the opposite I don’t understand how my emotions can switch up on me this much

Longer post, but please, I need some guidance. I thought that my thoughts relating to relationship OCD were taking over. But, my bf started treating me differently. I tried to have a conversation and communicate this worry. He then texted me that he had actually been feeling distant for a month and has been meaning to tell me. But “we’re fine now.” I spiraled. Later in the week, he went quiet after a disagreement. After he promised we were okay and he was okay, I found later he was texting a mutual friend (female) that I was crying again. She said that it was fucking insane and other hurtful things about me. He said he lost his trust with me because I looked through his phone and saw that message even though during the whole relationship we had a mutual understanding that we had nothing to hide from each other and he always assured me that I could look through his phone at anytime. It’s ok for boundaries to change in a relationship, but it wasn’t communicated and I was harshly reprimanded. During the texting chain with the mutual friend he also said that “she just has no idea.” When I addressed this, he then said that for the past month, he actually felt he didn’t want to be in a relationship, but still loved me. I’m ruined. I had the same thoughts in January and knew I loved him. I found out it was ROCD (through this app) and told him the day after the realization because it was eating at me. So him saying I wouldn’t understand and telling other seems unjustified. I would’ve been the most understanding. Any help would be appreciated greatly.