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
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
40% of people who are rejected in romantic love slip into clinical depression.
72