so what do you do when you accidentally let someone fall for you? hypothetically speaking... say you strike up a friendship in which the other person becomes smitten and you are clear that you only want and can be friends? and say the other person seems obviously distressed by this as you leave them at the airport to run enthusiastically into the arms of your super cute bf? and say that person weakly says "call me" as you zip away - clearly not affected by parting? do you call? do you let it lie? do you attempt the friendship even though you know the other person will be hoping for more? what do you do?