When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
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
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Yawns are more contagious among people with closer relationships.
163
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
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212