Yawns are more contagious among people with closer relationships.
163
Intelligent men tend to be more sexually faithful.
31
40% of people who are rejected in romantic love slip into clinical depression.
72
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
Historically, sweat has been an active ingredient in perfume and love potions.
309
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