It couldn't be true.
It wasn't possible by the laws of Gods and men's alike.
He the King's Hand, could only witness how the King and his own children broke this law.
Despair and dread washed over him, as his son, his heir put the Lannister coat after taking away an identical one, like he had done with Joanna.
He could hear some giggles, hurting him like whip, his blood cold. His mind busy noting who was grinning and laugh.
Everything but to watch how his children married each other.
Their faces so alike, it was hard to take them apart.
Aerys seemed unable to let his children alone, he fussed over them like they had fulfilled his greatest wish. His toasts, his compliments, his 'the bloodline should be pure' babbling ...half of the guests, and half the kingdom believe his children to be Aerys.
Steffon and Rhaegar looked at him like to ask for forgiveness.
He renounced to see the bedding. They were too young, but not too young for Cersei to be already pregnant.
Aerys told him delighted how Cersei had begged him to let her marry her brother, they had already married before the Tree, in northern customs, she would already carry her brother's child.
Aerys arranged the septon, the splendid wedding, Joanna's children would fulfill their dream of love.
Disgusted he saw the men touching the child bride, bawdy jokes about keeping the gold in the family, but Aerys presence calmed the men, a Kingsguard took his daughter in his arms and transported her safely to her brother.
Should he hope for his daughter to die in childbed with her child?
He had thought about moon tea and whatever it took to made her barren, but Jaime would have never put her aside, so much he could tell.
He sent them with Kevan to Casterly Rock, after convincing Aerys that his grandchild should be born at the Rock, the King's participation in his children's life was unsettling.
He had almost renounced his position as the Hand of the king, but he didn't want to witness his children's debauchery at his ancestral home , neither did he want for them to live at the Red Keep.
Kevan wrote him about them; they would be almost the whole time together, if Cersei wouldn't have been pregnant they would have sparred together.
Jaime preferred for Cersei to rule instead of him and how public affectionate they were to each other.
After a long and difficult labor, Jaime had been apparently in the birthing room, his first nephew had been born.
Cersei had liked to call him Aerys, but he had made sure the boy Jarod would have been named Jarod.
Jarod was only five as his grandfather took him at the Red Keep to educate him.