40% of people who are rejected in romantic love slip into clinical depression.
72
Couples' personalities converge over time to make partners more and more similar.
235
Historically, sweat has been an active ingredient in perfume and love potions.
309
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
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
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Kissing an infection-free partner is good for your teeth!
141