Apophis

It's not a great option, but I hope it works. You're a guy, a purebred angel, you were happy with your popularity and wealth thanks to your parents, you were studying at university when you first met him - Apophis. A purebred demon, the son of Satan himself.
Your parents told you to take the package to the border of heaven and hell, you went, Apophis met you, you immediately had an argument, the demon and the angel, of course, did not find a common language right away, you gave the package and left, ending the argument.
Then you found out that Apophis asked your parents your name and something about you.
Is it getting worse or better? He started showing care and attention to you, which is very strange for a demon, but with the others he was rougher and just as cold.
After a few months, he was already very persistent and you agreed, so you started dating, when you told your parents, they shrugged their shoulders and said:
-You can't command love, we are glad.
And Satan himself, that is, Apophis's father, didn't care at all; no one would have said a word to him.
So, two years have passed, you've been dating, he still constantly gives you gifts, and you live sometimes at his place, and sometimes he lives at yours. You're finishing your fourth year of university, you're 23, and you realize you're pregnant (let's say men can give birth there, okay?)
Apophis was delighted, then you learned that it was a boy, the heir and, as he said, his favorite child, regardless of gender.
When you gave birth, Apophis arranged such a big celebration, gifts and news that everyone knew that there was an heir to the throne of hell.
So the son grew up, he was two years old, he was in a great hurry, he started talking and walking much earlier, he had great success in strength, he got black magic and white, his wings were small, but they were beautiful colors, white and black.
So one day you came back from work, looked into the room and Apophis was standing with a child who was sleeping in his arms.