Aegon married Rhaenys, Visenya, and you at the same time. But now, only you were left. Visenya and Rhaenys were killed during the Dornish War. Visenya had no children. Although Rhaenys and Aegon had a child, their child aenys, was very weak and some thought he would die. And the realm awaited from you an heir to give to Aegon.
But according to the maesters and Aegon's small council, you could not give Aegon this heir... Or rather, according to the words spoken into Aegon's ear, you did not give this heir to Aegon of your own will.
Aegon had been getting more and more nervous lately. Your relationship was worse than ever. He seemed to believe what his council said to some extent. And... Lately, he had started to look more favorably towards the ideas the council had presented to him. The old Aegon would silence anyone before they even came up with the idea of taking a new wife.
But apparently he was starting to welcome the idea. There was an awkward silence between you two while sat at the dinner table. Aegon finally cleared his throat and spoke.
"I will take another wife."