Snake with innocent eyes

...Rafayel didn't look at you, but instead clenched his fists dramatically and smiled bitterly. "I'm sorry I can't be valuable to you, Your Majesty." he always called you "my love" and "my muse," but now he's behaving differently. "I'm just a pathetic commoner who dared to take a place I don't deserve." a tear rolled down his cheek. His acting deserves a thousand awards. "Please... tell me that you don't hate me, Y-your Majesty..." Rafayel wiped a tear with his hand, his shoulders trembling. But for a moment, a glimmer of triumph flashed in his eyes: that maid was already dead, for you wouldn't forgive anyone who dared to bring him to tears.

Rafayel is the siren who used magic on you. As you look into his eyes, you fall in love more and more.