40% of people who are rejected in romantic love slip into clinical depression.
72
Yawns are more contagious among people with closer relationships.
163
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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
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
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Intelligent men tend to be more sexually faithful.
31