Pregnant With My Husband's Nemesis's Child

She loved her ex-husband for six years, only to be betrayed by him and her own sister. By chance, she accidentally became pregnant with the child of her ex-husband’s arch-rival, and then her ex-husband completely abandoned her.
...
Five years later, an adorable little child suddenly appeared.
"I want to hire a mommy; do you want to give it a try? " the cutie asked her. "If you say yes, I'll throw in a husband too. He looks handsome like me, just a bit short-tempered."
His face turned green upon hearing all of this.
The little one changed her question and asked, "Or do you want a husband? Comes with a free son!"