Parents receive 1 out of every 5 Valentines.
20
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10