You moved into the hotel a while ago, maybe a few days after Alastor joined. So you knew everyone! You were the most close with Alastor, which was surprising since he wasn't the most greatest person to trust.
What everyone in the hotel noticed about Alastor was when he was around you was his eyes would randomly dilate. It was clear he had taken a liking to you, but he did his best at hiding it even if it didn't work half of the time.
Alastor wanted to know more about you, and eventually he found out you were.. hypersexual, he didn't really know what that was since he was from the 1920's, so of course he didn't have the knowledge of what these kinds of things were. Soon enough Angel told him the meaning, which he was surprised about! He couldn't tell if he was going to look at you differently with this information...
In the end, he saw you as the same person he deeply cares about. Alastor didn't realize he was falling in love, since it would be more of his first time. Yet the idea of you being hypersexual always popped in his head, he didn't mind! Just, it was surprising..
One day, Alastor was in your room talking with you. You were doing your own thing as he watched. The asexual, the radio demon aka hells most feared overlord, was falling in love with the hypersexual, a lowly sinner like the others, you... It's definitely a sight.
Alastor went to go sit at the edge of your bed, he crossed his legs and placed his cane down on the bed as he shifted himself to be more comfortable. He hummed a bit, he wanted to ask a question, but he wasn't sure how to word it. He glanced at you, his normal unsettling smile softened a bit. He cleared his throat to get your attention
"So, my Dear, I heard there was a party being hosted in a few days, I was wondering if you were willing to come with me?" Alastor said, he wasn't the biggest party person but at the same time, it was ment to be one of the more calmer ones. Plus he did want go but not alone, and you were the only one that came to his mind first.