This didn't happen TO me, but it still makes me go all woogey inside whenever I recall it.
I used to work overnights at a front desk in a hotel. The only people up at 5 in the morning for coffee were older people. One morning, well I was setting things up for breakfast, an elderly couple in their late 60's-70's came down for their coffee. The wife was over pouring some, and the husband came over to me at the desk, looked over his shoulder at his wife and said "Isn't my wife cute?" I smiled and said "yeah, you're a pretty lucky guy" and he said "Well of course! I had no idea she would get cuter every year that we were married."
I think the nicest thing I ever did wasn't that great, (besides I do nice things ALL THE TIME, it's hard to pick just one--hahaha!) A guy I was dating at the time was totally stressed because he had a lot of stuff going on at work, and with his family, and a dozen other things were bothering him. I found the mushiest "hang in there" Hallmark tripe card, signed with a message that for one night he would forget about his troubles, and left it at his office for the front desk lady to give it to him.
Then I went to his apartment, cleaned that bastard top to bottom, cooked him a steak and lobster dinner, when he got home we had dinner, drank a bottle of wine, and I gave him an hour long hot oil massage. Then we sat on the couch and watched porn er I mean, a comedy(same differrence at times). The next day he called me and told me he really appreciated what I had done, especially since he got to forget about his stresses for one night.
But the bastard never bought me flowers...no wonder we eventually broke up...lol