ADHD caused the breakup

My fiance broke up with me after 13 years together. He said he had a lifecrises.

I didnt understand he had ADHD until after the breakup. I used to blame myself

 getting angry when he didnt listen and left me alone focusing 

on his work for days. 

The first years together he had his focus on me and he was spontaneus, fun and unconventional. Things were very good. Then he started to get

distracted, focusing on other things and the relation  got worse. He often misunderstood me.

He also had OCD and got more and more controlling.

It was very sad. He has an adult autistic son, who he spent more and more time with. 

Should I talk to him about hIs undiagnosed ADHD? 

To explain why the relation didnt work?