Sea otters hold hands while sleeping so they don’t drift away from each other.
104
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Parents receive 1 out of every 5 Valentines.
20
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130