He's lonely or lost or scared or ill or all.
He says he's independently wealthy but I've seen him starving. He shuffles up, shrugs, "Have you got ten? I left my wallet in my other coat" and then buys smokes. He never pays you back.
He knows everyone and he knows everyone's sister's boyfriend's mate's brother.
Said he nearly murdered a kid who swore at his mother, says it with the gravity of a schoolyard boast.
Doesn't need a lift, his mate needs him to run his twenty grand system at the casino. But I see him on the bus.