Singer's ... preferences ... have long been an open secret in town. He's notoriously shy, almost cripplingly so. So, the efforts to "find people" for him were often passed off as being because he's socially incapable of doing it himself. I cannot speak to whether that's true or not from my own experience, all I know is that whether the methods used and people involved were illegal/minors or not is still a source of debate.
I've long heard rumors he's deeply involved/compromised due to his preferences, and I know a few people who worked with and for Bryan who swear that it's all overblown. They say it's all about his personality quarks. But I want to be careful with what I say because I do not have all the information (but can send you a PM tonight with a bit more). He's brought this all on himself though, that much is for certain. And I do believe more scrutiny is warranted based on the number of accusers.