When Rose said that, for some reason, it sounded reassuring. They trusted and respected Jay and thought that he would be able to handle the situation properly. Ann's behavior towards him totally changed when Rose whispered something in her ears. So what exactly did she say? There was some big secret that Jay wasn't aware of. Until now, it was only known that Jay loved vampires however later it was told that he started to hate them. Basically, a human's feelings could change easily based upon the stimulus that he would receive. Jay was a perfect example of that. Would one not want to take revenge for his slaughtered family? Well, at least Jay wanted to take revenge and that was specifically why he was awarded a system. Since earlier, Jay had absolutely no idea as to why Rose had been

