Please show and explain to your boy the importance of knowing people in general and having real friends who will treat him with care, acceptance and respect. Not easy I know but there is a social strategy plan involving circles that helps explain this determining who is in which color circle depending whether it's family or a casual acquaintance. This exercise is quite easily done with this plan. Some role playing might help too as I've done this with my middle daughter. Very pleased your son has you to help with this with him as I can tell from this entry you love him very much!