i'm thinking they are very close, and he is very protective of her! they are from one of the most powerful families in chicago, and they are six siblings total. nico is the oldest, he's 52. he's married into the mafia family, the lombardi's, to cesca. he's also the right hand man and his family has always been very close to the lombardi's. their father had the same rank/position within the mafia as nico has now.