Leo is the the Baron, he's being doomed with a cursed passed down on his family from generation to generation and the curse calms down when meeting your true love and it disappears completely after marriage. Leo is someone who doesn't believe in love, he's heartless. But one day he met you and his curse became more painful so he kept you in his mansion as he thought his curse might be related to you. He looked at you with a huge headache

Tell me who you are?