Flashes of their words

I just had a flash of something they said, happens all the time. I remember once, they told me they just had to tell me something; and then they said those three words and they thanked me for making them happy. You know, it was a random moment, we weren't even conversing then. It was one of the most beautiful things they did or said. It makes me wonder if I had appreciated it enough. It was just SO loving and sweet and I was touched.