There is a word for that realization, that every one else has a million thoughts per day, and if that friend didn't remember you don't like banana they probably sat in the bakery isle arguing aloud with themselves and just ended up making the wrong decision because they have 30 friends and it's hard to remember what they each like, but they still went out of their way to do something to make your day better and that's what really matters, plus you didn't really need pie anyways you've been doing good eating healthier

Also the word is sonder