Parents receive 1 out of every 5 Valentines.
20
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Couples' personalities converge over time to make partners more and more similar.
235
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
Men fall in love faster than women do.
32
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Historically, sweat has been an active ingredient in perfume and love potions.
309
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634