In "Fire & Blood," Rhaenyra's longest-lasting relationship is with her uncle, Prince Daemon Targaryen. In addition to the age gap and the incest, their relationship starts off on an especially controversial foot, with rumors that he either seduced her or taught her to seduce Ser Criston Cole, resulting in his exile. In the book, Daemon was married twice before, first to Rhea Royce, then to Laena Velaryon, sister of Rhaenyra's husband, Laenor.
However, both Velaryon siblings die, leaving Rhaenyra and Daemon both widowed and with children. Months later, Rhaenyra and Daemon marry, causing a scandal with the sudden nature of their marriage and with its secrecy, performed without King Viserys's knowledge or permission. Nevertheless, their marriage is ultimately accepted, and they have two sons, Aegon and Viserys.
On "House of the Dragon," Rhaenyra and Daemon have a very flirty relationship dating back to when she's a teenager. He takes her to a brothel and kisses her but flees before they can have sex. Rumors of their encounter spread anyway, and he tries to get the king to let him marry Rhaenyra, but Viserys refuses. Years later, after both their marriages to the Velaryon siblings and Laena's death, they fake Laenor's death together so they can marry. Technically, Rhaenyra has two husbands now.
