I forgot the name of a person I went out with on a date once a few years ago. We had exchanged names previously but damn Scruff automatically deletes old messages the more you chat. I was young and way too embarrassed to ask again. I had a fair idea though...
Anyway went back to their house for some fancy shmancy tea (nothing happened afterwards, we didn't click)
But before they were pouring the tea I spotted an envelope in the open-top bin, thankfully legible enough to make out the name. Didnt matter in the end as there wasnt an instance where we needed to say each other's name. I'm not sure they knew at the time, but hey.
Not my proudest moment.