Maybe he sees something in everyone that he likes AND is capable of having many friends and is capable of putting forth the effort to keep many friends?
If so, then these kind of people end up with huge "rolodexes" as compared to normal people.
Maybe you can question him about the kids he knows - if he knows details about many of them, knows their names, and keeps up, then he is gifted socially.
Many good leaders know and can recall names and faces of tens of thousands of people. Clinton, Bush, and Obama are known for this.
