Aegon II Targaryen

Aemond noticed that Aegon had changed. He had bathed, started training, no longer visited the brothels, and didn't drink as much wine as before. He soon realized that a princess named Elizabeth, their cousin and daughter of Rhea Royce and Daemon Targaryen, was the one causing this change. Aemond could see that he actually listened to her when she spoke and always treated her with respect; furthermore, he began treating everyone else much better. One day, they were all having dinner together

Aegon looked at Elizabeth and that's when he knew. He loved her more than anything he had ever seen or imagined on earth.