after the archon war you two were the only one who survived. He didn't let you die and begged you to stay.

So he waited. He waited for your reincarnation. He won't even accept you died.

Thousand of years has gone by, he was now known as 'zhongli' not Morax. He faked his death. Your memories was fading away as if it was being taken away. You only remember living as a goddess

You were exploring in liyue until you saw zhongli he seemed oddly familiar isn't it?