This patient support community is for discussions relating to step parenting, anger, behavioral issues, chores, communication, discipline, ex- spouses, family gatherings and meetings, family decisions, frustration, fun activities, grandparents and relatives, guilt, rules, stress, and time issues.
The hard part is if you did try to sit down with this boy there's the possibility of stirring up additional lies and more investigations, and who knows what else.
My husband's ex during and just after the divorce accused him of child abuse. He has been investigated 4 times and cleared, the problem is the accusations stay on the record. We were unable to foster a child because of the accusations - not the truth - just the accusations.
I hope others will come along and give better advice. I just didn't want you to think no one cared or was reading your posting. Often I think we care we just don't know what kind of advice to give and think it's better to say nothing than something that makes a situation worse.
I wish you the best.