Is it, in your opinion, probable (I'm not asking if it's possible because there are always exceptions to the rule) for a close friendship to exist between a male and female with minimal sexual attraction? If the attraction is one-sided, it still exists. How "healthy" is a friendship with one-sided attraction? Two sided? What if it's two sided, but one (or both) are in outside relationships? Do things like this ever end well (think long run)?