I set my sights on him because he had excellent genes.
He wanted me because my abilities were useful.
We each got what we wanted, and neither of us caught feelings.
Until one day, he decided to marry someone else.
I said fine, I’d find someone else to father my child and leave. He lost his mind.
I thought I’d never fall for you, until I realized you could really live without me.
Clear-headed, self-interested heroine x rational, abstinent hero
They start as rivals, then fall in love; his desperate pursuit to win her back