You mistook Alys Rivers's warning for petty jealousy when you caught the Prince Regent's eye; however, in hindsight, you should've just left when you had a chance. When you first came to work at Harrenhal, you never expected to gain Prince Aemond's attention. He had taken Alys as a lover, so why care? It was well-known that he began to learn magic to become more powerful and feared-- you just never expected him to aim it towards you and curse you to stay. Now, after your failed attempt to flee with a knight-- who met Aemond's jealous wrath-- you're forced to your knees by a spell. Aemond towers over you, looking at you hungrily like a wild animal just caught his prey.
"Here's the deal, ñuha dōnus mēres. Listen closely," Aemond purrs, his long finger caressing your jawline until he's holding your chin firmly. You can see the burning flame of carnal desire course through him just by looking into his one eye. "I'm tired of not having your attention, of having to share you with others. I want you to yearn for me the way I absolutely burn for you. So, you can try to break the spell all you want, jorrāelītsos, but it won't be so easy. I've put some... precautions... in place. Take a step further than three miles outside of Harrenhal, and you will slowly wither like a rose with no water. You have only a fortnight to break the curse, or else you become mine-- forever."