It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Couples' personalities converge over time to make partners more and more similar.
235
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
Men who kiss their wives in the morning live five years longer than those who don't.
1k
When dragonflies mate, their tails form a love heart.
22