I got the email two weeks after we broke up.
In order to better understand what went wrong and thus hopefully fix it for future relationships, he asked why I left. He hoped I had calmed down, and wanted to know if he was too pushy, or not decisive enough. Too supportive or not caring enough? On and on it went, asking me what went wrong.
After some thought, I replied with one line.
“Asking the question proves you wouldn’t understand the answer.”
He said that was needlessly obtuse, how could he ever understand without a clearer answer? I agreed.