When Lucifer rebelled, he asked Michael if he wanted to go with him. Michael refused and personally laid Lucifer down the mountain.
Then Medanzo pestered me (please forgive me for using this word, my literary foundation is not very good), so Michael and Medanzo got together and gave birth to Enya. But technically, Michael still loves Lucifer.
Enya was lured by Raphael and killed her father Michael herself. But Lucifer still loves Michael, so Enya is blind on the battlefield. Michael's body was taken back to hell by Lucifer.
Michael was finally resurrected by God, but I don't know what happened after Michael was resurrected.