A viral theory suggests your birth order influences who you date. A psychologist explained why it feels so relatable.

Ahead, relationship experts and therapists break it down. The birth order dating theory has been around for over a century. Today, the hashtag #birthorder may have 690.5 million views on TikTok.

Power couples President Barack Obama and First Lady Michelle, Brad Pitt and Angelina Jolie are compatible matches based on their birth order ...

A viral theory suggests your birth order influences who you date. A psychologist explained why it feels so relatable.

The question of whether siblings' birth order shapes their personality has puzzled families and psychologists for years. What does the evidence say?

Birth order might not affect personality, but it COULD affect how you handle money.

Explore the unexpected ways your birth order shaped your identify and behavior.

Lochlan is the youngest child, which according to the birth order theory (and every younger sibling I know), means he should be the carefree, attention-seeking and rebellious one.

Regardless of your birth order, if you're looking to make friends with your boss or manager, you may have better luck if they are the same birth order as you.

“Eldest daughter syndrome” assumes that birth order shapes who we are and how we interact. Does it?

While research has failed to show any consistent and substantial evidence, there is a "germ of truth" to the stereotypes peddled about birth order and personality traits.

TikTok's birth order dating theory argues that your birth order can impact your romantic compatibility. Therapists explain whether there's any merit to it.