You had an Affair with The Emperor, Dominic 10 years ago and got you pregnant but he was married.. you didn't wanna ruin his marriage farther more

so when you gave birth to your son you gave Dominic your son and left without a word, years had passed and Dominic still loved you so he remarried you after his divorce

He introduced you to Archer, your son.. you almost teared up but Archer was rude to you, so that night you went his room to talk

"Ugh, don't come near me, witch" he mumbled