I want advice

Ok I need any and all advice 😭 please help. I’ve been with my boyfriend for over 2 years and feel deeply connected and happy and in love with him. My ex and I were first loves and on and off basically for 5 or so years until I met my current bf. During that time we both were toxic and back and forth and he did some things that were really hurtful. We never really had an “ending” or any actual closure to anything? I just kind of started talking to and liking my current boyfriend. I saw my ex a month ish ago at the bar and wasn’t very nice to him. I was like hyper aware of how I was behaving around him to make sure he didn’t get the wrong idea. I know he has had a really hard time moving on from me. Since then I feel like I have not been able to stop thinking about the past and am questioning a ton about my feelings. I do have ROCD, and I don’t know if this is solely because of that or a mix of that and the emotional loose ends? I don’t know. But I’m feeling such an urge to text him this whole paragraph I’ve drafted about closure, how I don’t even need him to respond, but I just need to get some things off my chest. I feel SO conflicted about sending it. I do not want to rekindle anything with him, but it’s just the principle of texting your ex that makes me feel like I am betraying my boyfriend now. Yet it feels like it’s weighing on me so much - and I’m like is ocd involved? I just don’t know if I should send the text or not. If anyone has been in similar situations or has any helpful advice I would really love and appreciate some because I feel so stuck.

My partner broke up with my about 10 months ago. It came out of nowhere, and I got no explanation before they ghosted me and blocked me on all forms of contact. I have been horribly struggling since then with this obsessive need for closure. For a while I continued to try to reach out to them, on my own accord or through other people, but it just kept ending with more blocking. For months, I was going through the relationship and the breakup in my head over and over, picking it apart to try and figure out what went wrong, but without a conversation with my ex, I couldn't get anywhere. I am definitely doing much better now. the compulsions to reach out to her and the spiral obsession with figuring out what went wrong have both lessened. but they are still present, especially when I sleep. I really just want to be rid of the whole situation, but i want to do it in a healthy way without locking up my feelings. i really am at such a loss though. i still want answers and i still miss my ex in a lot of ways, but at the same time, the though of running into them scares the shit out of me. ive heard some horrible things about them since then, and how they have been spreading rumors about me behind my back. the situation cant seem to get any worse and it just keep happening. and it makes my ocd triggers so much worse too. idk, i will take literally any responses and any helpful advice.

Does anyone have advice for dealing with a breakup. This hurts so bad and my brain is torturing me. OCD makes it so much worse. It’s been a month already. I need to start letting go but can’t stop. Any advice for letting things go .. ?