We all have small quirks that baffle our partners . As "normal" as we might think we are, there's always going to be that one thing you do that other people just find bizarre. Maybe you have an odd habit when it comes to your socks, or perhaps you're a picky eater who indulges in some interesting food combos.

One man has taken to Reddit to share his girlfriend's strange quirk, as he joked it was a red flag that has turned his life "upside down". And it's all to do with the way she makes sandwiches. The man said he "recently discovered" that when his partner makes herself lunch, she only ever butters one slice of bread instead of both slices.

The quirk has left him so confused that he started to doubt if he was the weird one for assuming both slices should be buttered. Woman says she 'can't live' with her fiancé thanks to annoying bathroom habit In his post, he wrote: "I've recently discovered that when my missus makes a sandwich, she only butters one slice of bread. It's made me question if I'm the strange one who butters both slices or if I'm normal and she's the freak.

"I'm also thinking that as I have only just realised after a year, perhaps the second slice just doesn't need butter. My life has been turned upside down by this!" The man went onto ask what other "weird and wonderful things" other people's partners do, and over 1,000 commenters flooded the thread with their own stories. One person said: "When having a bag of crisps she'll only eat the big, full crisps, not.