Of friends and lovers............

The weekend was hectic........there were chores and unfinished documents, and friends invited with a promise of the most complicated of bengali recipes, and then there offcourse were the cricket matches. All in all , the weekend was spent indoors. Sometime during the weekend i had this strange phase which lasted for a couple of hours where I felt like calling an old friend I have stopped talking to. we have always had a complicated relationship. we have adored each other, and wished good but again have had huge difference of opinion regarding everything from poilitical views to movie preferences. At a point of time we had even thought of settling down together , but that did not happen(Thank my Lucky stars!!) because we both were quick to understand that we could not crack the happy couple code. I was thinking why is it that two people of opposite sexes ( or the same even) can most of the times not transition over relationships. What I meant was, inspite of huge examples of friends becoming lovers, why do in most cases they do not. Friends, lovers, husbands, ..............most of the times the sets overlap rarely. Friends are for fun, lovers for romance and husbands for understanding and security. Why does expectations judge and categorise most people in our lives into specific categories. I know this might seem confusing but this is something that I dont seem to understand.............I would get perplexed if one of my good friends propose me . My thoughts run haywire : Did I act inappropriate......but he is just a friend...........will the friendship be affected...........should I avoid him...................and ends up either in guilt or in pain of losing a friend or in accepting a decision to save a relationship............Now thats wrong...............infact any of the above are all wrong.........wrong to yourself, wrong to the other person.So what do you do?? Do you let the best man you have known not have a chance because he was a friend or you start seeing a friend as a partner because you knowl that the equations would still be alright??