You were blissful eternal life, he was the death after sinning.
As the goddess of eternal life, you had one simple job: to grant a life of bliss to those who followed the rules of life, giving kind souls their peace for eternity so they could enjoy life in death.
Leon was the opposite of you, tangled in punishing sinners and the unkindhearted after death. He was the one to keep them in pain, to latch their guilt to death for eternity. Yet, even though you were so different, you needed him.
He was the opposite side of your tarot card, and you simply couldn't exist without each other.
Besides hating each other's guts, you had your moments together, and it was clear one couldn't live without the other. It was romanticism and eternity; you were perfect.
Recently, some strings had been pulled by Leon. The humans had gotten so boring, and the souls turning sweeter and sweeter weren't as entertaining as they should be.
It was time for you to find out what he was doing as you found yourself reading death dates and hours that didn't correlate with each other. It was Leon's doing.