Its true that sometimes we formally wish a person and sometimes we actually mean it. We mean each and every word we say, or we write to the person wishing him or her so specially that even we sometimes fall short of words thereby making every such moment memorable for that person and if the relation is so deep it becomes memorable for both the persons. I remember b'days of my dearest friends and always wish them without any fail considering it not as my duty but as I like to wish them on every big or small occasions. That is the way I make it special.
Relations always come with expectations sometimes big or small, sometimes fulfilled and sometimes not, and sometimes asked for and sometimes given in advance. I am saying so because when we start giving a person a place in our life, we attach some expectations to that person and we want them to be fulfilled, provided the expectations are acceptable from both sides. These expectations may change from time to time depending upon how any of the person, with whom the expectations are made, is living and the conditions around him or her have changed from the time he or she came into our life. As since we generally do not give the same place to more than a person, we expect something different from different persons in our life.
We may not expect that a person whom we just met, remembers the day I first met him or her, the day I shared some secret with him or her, or the day I shared my most happy, embarrassing, or something unusual with him or her but we would expect this from our close friends. Expectations could be in any form. It could be as small as giving a miscall in return of a miscall or could be as big as giving travelling a long distance for a loved one just for a small reason to show that he or she really means us a lot. These things add charm in relations and in some sense let us know how a person is but it depends upon the expectation made by us and the expectation fulfilled by him or her.
People who have some special place for any person keep certain expectations reserved for themselves. The word reserved here does not means that their are some new expectations made but only the meaning changes like if a person asks the other to bring something for him or her, this may not mean that it is something rare that only a few can bring that. The same thing brought by any other person may have certain value but the same thing it may be priceless if brought by the person asked to. This is because there are lots of feelings attached with it which only the concerned person could feel.
The topic "A reserved combination..." means a fact which says that though we do our best in every relation in our life, the same set of expectations, duties and responsibilities gets somewhat different depending upon the relationship. There is nothing special in every relationship but the same things mean different for different relations in our life.