Friends until the food runs out. I've got a tight ship, unfortunately we are in new england, and winter gets long. It's pretty limited to people of the same mindset, leaving the others to fend for themselves. More mouthes to feed = less chance of overall survival. I might pass off a handgun to a neighbor I really like, give them some farewell advice, but I'm not going to hold their hand through it. I've got my own to worry about, and the people I've actually developed a plan with. Above the set "party", that would be 1 too many to improvise a new strategy. Party is small, but smart, armed to the teeth, fast, and fairly well supplied so far. I'm humbly guessing at least 50% of the north east will starve off in the first 6 months. If that 6th month is march, we're in luck being that is the start of growing season. Once the masses start dropping in large numbers, less mouthes to feed, food becomes less scarce. Some people will probably start communicating again. At this point, having friends won't be such a bad thing. For the first 6 - 10 months, I'm avoiding everyone aside from the immediate group, or until people start communicating again and don't want to eat one another, whichever comes first.
If people are dying of starvation how does food become less scarce? I would think that people arent going to be dying of starvation until the food is gone. Game and domestic animals will be gone. I bet that people would even try to eat all the silage on any farms that they find. I imagine that any area that is still able to grow and produce food would be very protected.