someone from before recovery reached out to me

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.

the past month ive been ruminating about a time last year where i hurt a friend by unintentionally bringing up a traumatic memory when i was really drunk, enough that i didnt remember it, so i went 6 months without apologizing until i was worried when they werent talking to me anymore. so they told me when i finally tried to talk to them. i apologized and they told me we were ok now, and still want me in their life, but now they stopped talking to me again and its been 3 weeks, and im terrified that i did something again, especially since they stopped talking to me when i made a mistake before, and wont tell me outright. the event triggered horrible horrible guilt over what i did, mostly guilt About the guilt i was feeling, because its not a normal amount of guilt for a regular person, and eventually my compulsions for confessing and ruminating reached a high point. and when they stopped talking to me again they got even worse . they are aware i suffer from ocd and anxiety to an extent (we've been friends since we were teenagers) so its hard for me to believe they wouldn't do this unless i did something wrong again, especially due to the events of my past mistake. lately ive been wondering, 'have they found out my abnormal reaction to what happened ?' 'did a friend who knows about it tell them?' ive been avoiding asking them if i did something wrong again, because i dont want to make it a habit since i can fall very deeply into that hole of asking for reassurance and i feel even regular reassurance, without the ocd, im the last person who deserves that right now. im scared they somehow found out about my compulsions (which isnt entirely irrational) and i feel the need to apologize to them again. ive been having panic attacks about this. i feel like no matter what i do i cant fix our friendship, and its going to end badly. i feel like a terrible friend, and im too mentally ill to have friendships. i don't know what to do.

since one of my biggest fears/events of my reocd happened (not the way i thought it would happen!) i've been healing and understanding a lot of things (like the fact i was the one being abused in my old relationship) but thanks to that my ocd has been trying to launch on a new event and i don't know. i was in a cut and off relationship with my ex three years ago, this happened when i was an older teenager and really confused. during the time i cut off momentary with him i started to get compliments and cute messages in an anonymous confession page and used to post them replying in a playful way or just with genuine curiousity. the thing is, i got with my ex once again in secret for the last time but honestly i'm realizing lately that i didn't love him anymore and being with him made me feel terrible but i wasn't strong enough to leave him once for all. i didn't tell any of my friends about this because they hated him (for a good reason) and i was also disappointed on myself for this. he pushed me a lot make it public and i would say to him a lot of times that i wasn't sure. the thing is, that i still got that type of messages on that anonymous confession page and still publish them on my profile while being with my ex in secret, but eventually i stopped doing that. then i finally left my ex (was horrible). but since what happened to me, i cant stop thinking if that was cheating – it was cheating? i'm not sure anymore and i feel like im going to have a relapse.