Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Couples' personalities converge over time to make partners more and more similar.
235
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
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
The single biggest predictor of love is proximity.
30
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
40% of people who are rejected in romantic love slip into clinical depression.
72