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
Men fall in love faster than women do.
32
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
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