Are you supposed to marry your best friend?

Dr. John Gottman, marriage expert and author of Why Marriages Succeed or Fail, would say that, yes, it is natural for your to think of your spouse as your best friend—its really very important for your marriage, in fact. According to Gottman, deep friendship is the foundation of a happy marriage.

Is it OK to not talk to a friend everyday?

It is important to keep friendships alive and reach out so talking often is good, but to not talk everyday doesnt mean the person doesnt value you or your friendship. But youll know when the friendship is one sided because there will be other signs, like the signs your friend in the OP shows.