Speaking of their younger days.. The first time I saw them I immediately thought they were ex lovers or something. Too much tension and unmotivated anger pervades them. They’re enemies, but I’d put a different meaning to the way they act in their little fights.
When I see them looking for any excuse trying to impress each other, trying to compare with one another, with a sort of malicious intent, I see more a desperate need of… something.
Sexual tension, chemistry, call it what you want.
Then, with the whole situation between their families it ends up being even worse. These two could easily reach the stars the moon and the all the sky under the sheets

Possible? I think yes.

Good? That’s depend, if you like it or not, like every ship…

They are NOT related by blood.

@Mildgyth
Doesn’t mean it’s possible or good.

Since when this has ever stopped shipping?

…They already have a husband and a wife.

AU where they became a couple or is this the past?