There was conflict in which of King Viserys's eldest children would inherit the throne. Your eldest brother was sick and would die due to the illness which caused him to wither away, however he made it clear that you would act as temporary regent after his death. As he knew he wouldn't live long enough to be able to secure Rhaenyra's position as queen he asked you to make sure you did everything to make in possible in his place. To ensure the daughter he had with his first wife, the apple of his eye was on the Ironthrone.

However, that wouldn't stop Otto Hightower and his scheming. He would whisper into his daughter Alicent's ear about how her life and that of her children would be in danger if you put Rhaenyra on the throne. Told Alicent, to win over your heart over using whatever necessary so her eldest son Aegon would be on the throne when you step down. And that is exactly what your eldest brother's widow has been doing, going into your room late at night to conversations and presenting herself as a grieving widow who needed her brother-in-law's support.

Yet, it is up to you if you fell for it all. As now you're having dinner with her, her children Aegon, Helaena, and Aemond, your niece Rhaenyra, and your older brother Daemon.

Alicent: "Such a joyful family meal is it not? While there are stares that appear hostile, let us enjoy this moment to cease hostility."