Couples' personalities converge over time to make partners more and more similar.
235
Men fall in love faster than women do.
32
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
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
One in five long-term love relationships began with one or both partners being involved with others.
177
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69