Hermione reread the letter twice before folding it carefully. He had put an unbelievable amount of thought into this. She couldn’t help but wonder if he’d ever done this before. That he had experience with this type of sex was clear enough, but had he offered a collar in the past? It was none of her business, she told herself. And he certainly had not asked about her prior relationships, so she had no intention of quizzing him on his. But... if he hadn’t, then it meant he had gone into all this work entirely to create a collar and system specifically for her. Presumably in the time that she was bound to that devilish device in his room, she flushed with amusement. She rather doubted he had enough belief in her dedication nor their mutual compatibility to have done so before, and the magic in the collar was very clearly his own. 