Level: EasyChange the Sexuality Distribution game rule to Homosexuality. Play the The Struggle for Iberia scenario as Ibn-Marwan of Badajoz. He starts as friends with Emir Sa'dun ibn Fath of Burtughal, who will usually agree to an Oath of True Friendship. Then use the Seduce scheme on him.
Credit to
Bayek von Kuwaq on Steam for his
guide.