Let’s say you’re in a perfect relationship: you and your significant other are inseparable. How cute! You love the same foods, read the same books, watch TV together, talk about similar life goals, enjoy making fun of each other, and obviously, sleep together. This seems straight out of a fairy tale. Literally speaking, this is impossible, but if, for all technical reasons you feel so, that’s amazing. Here’s the catch: you and bae are probably having a rare psychosis that’s making you feel that you’re soulmates. Dear love birds, you’re experiencing a folie à deux.