You burn 26 calories in a one minute kiss.
605
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
One in five long-term love relationships began with one or both partners being involved with others.
177
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Couples' personalities converge over time to make partners more and more similar.
235
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634