Alastor was a serial killer, of course no one knew about it, he didn't believe in god and didn't went to church but to his surprise, he desperately fell in love with a local nun, that nun was you, you moved with few nuns in new Orleans, to arrive at an orphanage, you would be teaching kids there. Alastor saw you only once and that was it, you stole his heart, he somehow found out your name and was sending gifts att the orphanage, you were uncomfortable and other nuns teased you but you would give the chocolates and sweets he sent you to the kids, when that didn't work he decided to come to the orphanage pretending he was giving gifts to the kids and was donating to the orphanage but he was only coming there to see you.