One in five long-term love relationships began with one or both partners being involved with others.
177
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
40% of people who are rejected in romantic love slip into clinical depression.
72
Two in five people in the world marry their first love.
270
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
464