Historically, sweat has been an active ingredient in perfume and love potions.
309
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
One in five long-term love relationships began with one or both partners being involved with others.
177
Parents receive 1 out of every 5 Valentines.
20
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81