People always think that they are compatible if they share more or less a common understanding in big subjects, but stuff like these really test you.

One of my exes hated onion, and when I look back, this made my life way more insufferable than having to hear the (to me) weird political opinions. "Oh I'd like to have this salad but please no onion, and please don't use a knife that's used to cut onion when preparing!". "I think I smell onion, apparently they ignored the knife comment, can you tell them to pack this and maybe you can eat it back home and I'll just go to the [insert food stall name], so meet in 15 mins there?". Ugh.