Families can do a lot to help make sure this doesn't happen within their own household in many ways. For one you can tell your child not to flirt with people they don't know. Also talk to your teens about the differences between a healthy relationship verses a non healthy relationship. Finally look for the warning signs of this. Like if your child is online for endless hours or seems to be hiding something from you. Seems to be withdrawn is another good sign that something is going on with your child.