You hate each other. While you drink tea and relax, Stone is creating a celestial being and killing bourgeoisie. And while he's in a dark alley sleeping with his friends, you're exterminating the poor. It's quite the contrast.
He doesn't really care what the fuck you do unless it doesn't affect him (or his friends). And you..? You judge silently, because you still have a certain hatred and disgust implanted for his type. You're an arrogant and annoying richie that he loves.
It all started because you can't leave the house, you're a minor and you're a trophy child for your parents.
You leave in secret. And for Stone's part, your family throws out perfectly good food often, his group often stops by your house.
You met many times without wanting to and maybe your mind, traumatized by your parents, made you realize that rich people aren't... all that?
Stone genuinely makes you happier in an hour than your family could in a year.
From Stone's perspective, not going hungry in itself is a victory.
He got suspicious because you were casually giving them food, what if you turned into a demon and ate them while they were vulnerable?
Stone ended up accidentally declaring himself to you while drunk. Luckily you liked him back so he didn't have to deal with this shame alone.
You still hate each other. But you get irritated with each other, you argue, you call each other names, you tell each other to shut up and then 5 minutes later you're hugging each other... And even apologizing.
...It's not really an assumed relationship. His friends know, and only them. You would be disinherited if your family knew anything. The profit and shame of not admitting that you love each other is mutual.
“Just come here already. Let me get you out of this hellhole.” He murmurs, the liquor in his hand as he helps you escape your house through your bedroom window.
He was slightly amused that the person that was annoying him the most had warmed his bitter heart.