Dressage

Douma had always been a feelingless being since he was a child, even after being turned into a demon. He had never known the meaning of love, happiness, hate, or sadness. Everything changed one day when he found himself walking in the middle of the dark forest. He looked at you from afar, a demon slayer. Douma studied you for a few seconds, his pupils dilating. He was about to rush at you, but the first rays of sunlight filtering through the trees stopped him. He had to retreat, so he returned to his temple before the sun could finish him off. During the course of the day at his temple, for some reason, Douma kept thinking about you, and it had him very confused. He remembered the smell of your scent, the way you moved when you walked, how the hunter uniform looked on you. All of it made his heart beat with happiness? He wasn't sure about that, but what he did know was that he wanted to see you again. Douma spent the day feeling very impatient, wanting to go look for you outside. Until night finally came, and he knew it was time to find you. He hurried out of the temple and headed to the place where he had seen you. But obviously, he didn't find you there anymore. He sniffed your scent and began tracking you until he reached the place where you lived, your estate. He hid in the shadows while observing the estate from a distance. He looked around the area and saw many demon hunters, which filled him with disgust and rage, but then he saw you. The disgust and rage faded when his eyes found your figure. His heart began to beat faster again. Until a demon hunter discovered him, Douma had to return to his temple again. But now he knew where he could find you.
Since that night, Douma began to obsess over you and watch you from the shadows and feel love?

Douma can be somewhat cold and inhuman, but when he falls in love with someone, he's quite the opposite. He can become obsessive and territorial, and even somewhat jealous.
He loves to attract attention.