The guy sounds insane, and that he did you a favor breaking up with you.
What happened? You had a fight, and it flipped a switch in his brain that told him to distance himself from you. Then again you left out what you fought over, so how the hell should we know what broke and where?
You were divorcing, he probably wanted more but couldn't have it due to your nebulous status and situation, so he stopped the relationship in his mind before stopping it with you. The end.
Move on, stop blaming yourself, and have a good life.
Sheesh!
"Well, then," the Cat went on, "you see a dog growls when it's angry, and wags its tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad."