Yes your friend's case is a good example of registries needing more work and making sure if reflects one risk's. Not knowing your friend's case, but having clients with similar details, we would focus less on sexual re-offense and ask the questions about impulsivity, and sexual preoccupation. Why would someone hook up with someone they barely know. Why be involved with someone sexually your barely know. I had a client who dated a girl for 3 months before he found out her real age. When he found out he broke it off, she got angry and called the police.