Can anyone live without friends and have a fulfilled life?

In book VII, Chapter 1, Aristotle says, "It would follow, after these things, to go through what concerns a friendship, since it is a certain kind of virtue, or goes with virtue, and is also most necessary for life. For no one would choose to live without friends, despite having all the rest of the good things...." Of course friends are good to have around for multiple reasons; they are to protect your prosperity and are there to help you in good times and rough times as well. They are also there to benefit from your prosperity, we give to friends in order to increase our noble actions. I found it interesting that Aristotle included many relationships including parent to child and business acquaintances, so it is not just the traditional friends that we all might think. There is always a big disagreement it seems when it comes to friendships. Some people think that friends are a requirement of a fulfilled life, but others may think that friendship is also a worthy pursuit in itself. People that have lots of friends and are good to them are said to be praised. Another big disagreement among people is that of who really makes a good friend, those who are similar or who are opposite from you? There are just so many questions when it comes to friends: (How many should you have, what kind) and who can be friends (good or bad, or one of each)? So my question is a simple question; Can anyone live without friends and have a fulfilled life? I am just not sure about this...I think that some people are introverted and don't have friends to a degree and live a happy life and are happy with what they do and who they are, and someone is going to tell me that even though they are happy their life is not fulfilled? I find this topic interesting yet sticky in a since that their will never be a mutual agreement among everyone about these kinds of questions.