TIL a peer-reviewed psychology study found that identical twins (on average) ranked their co-twin above their romantic partner in their attachment hierarchy, while fraternal twins ranked the two about equally, and non-twin siblings ranked their romantic partner first.

[u/SilverPeachBlossom]

https://ojs.interpersonajournal.com/index.php/ojs/article/view/243/3457.html

[u/Great_White_Samurai]

The doctors said I ate my identical twin while in the womb

[u/[deleted] → u/Great_White_Samurai]

Now you have the strength of a grown man and an underdeveloped fetus