Repetitive Thoughts about Breakup - it's been three months

Yeah, I've learned now with friendships and with the new relationship I'm in, I'm not going to ask the person out after asking them out once, I'll let the other person ask me out next. If they don't I may as well just use them for conversation purposes. I've asked my friends and last boyfriend out too many times and I think they ended up taking me for granted that when I asked them to return the favour and they didn't. I ended the friendship and relationship right there. Because of this, I also told the dating app that it caused my mental health to downspiral and this led to the guy being banned from the app. It broke their terms and services.

I've been feeling better now and don't think about him as much since I started talking to the new guy. For some reason, the 13 times made me equalise the number of dates he did not initiate back with me. I have a feeling this is an asperger's thing.

so now all those memories are so interconnected, 100 times stronger, and thinking about some detail in one, brings them all out

Nope, because I've revenged on him 13 times for the 13 dates he did not initiate with me.

Memories remain to help guide us. This is normal. Take the wisdom from lessons learned, but Id say never worry about them being there, they are there to help you

It took me 3 years to stop thinking about my ex every now and then, and going through all the bad moments that happened before the end, the good ones are already forgotten, there wasn't many of those.

Possibly because you still have feelings for him?

i feel you. excessive rumination is the bane of my life. anti anxiety medication might help, but long term all its done for me is stop me biting my fingernails as much. 

I didn't even get as far as relationship.

I would agree with that. I still think about my last relationship even now and it ended in 2009. 

Only three months.

Many many people think about situations like that for years and decades.