As I was boarding my late night flight down to Costa Rica, I found that they had given my seat away. I patiently and tiredly waited and then talked to a lovely stewardess who placed me in another seat with copious amounts of leg room - excellent.
Though I was now wide awake, I was planning to soon use this extra leg room to crash and take a good sleep. However, I overhead a very tall couple contemplating an issue of extra leg room they had paid for; their seats had also been given away... and so sadly, on their honeymoon none the less, they were being broken up into different seats. I thought "hey I am short, I don't need the extra leg room and my seat is a bit closer to one of their seats," so I gave my new seat up to one of them. Interestingly when I had done this a couple of other empathic people on flight also decided to help rearrange seating so that this couple could have seats with extra leg room together. I now found myself sitting next to a really cute guy; score!