There are a few, one is that Peter is an angel that holds children's hands as they enter heaven. Another is that Peter actually kills the boys when they reach puberty and that Hook escaped and survived into adulthood and is trying to rescue the children. JM Barries sibling died at 13 and he often said they went to neverland.What’s the Peter Pan theory?
There's a lot of context around it but I can't remember sorry.