There is platonic love and then there is physical attraction. I feel am in love with every person who speaks a few kind words to me, who makes me feel good. At the same time I can be attracted to very unknown strangers on the big screen.
Yet there are so many people who confuse the two. Some thing is love is just physical attraction..and then there are those who think its just platonic (hypothetically speaking :)).
I suppose when you mix the two you get a happy marraige.
Its all very simple really, you have two equations and you have two very random variables and in a linear (read sane!) world there is one and exactly one solution.