Not really a horror story - was flying from NY to Denver. I had an aisle fairly close to the front, my husband was also in an aisle seat about 10 rows back. Young couple boards - one has the middle next to me, the other middle across the aisle. Man asks if I'd switch with his wife. I said no at first but they were a cute young couple so I changed my mind and moved. As I sat, the gentleman in the aisle next to me said something to the effect of, "You gave up an aisle for a middle?" I told him it seemed more important to them and this wasn't my first (nor probably my last) time in a middle seat. Besides, my husband and I were split up so - no big deal. He asked me if my husband had an aisle seat. I said yes, about 10 rows back. With that, he got up, asked me my husband's name and switched seats with him.

I called it quick karma.