When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Yawns are more contagious among people with closer relationships.
163
Women rate men more attractive if other women are looking and smiling at him.
17
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Anuptaphobia is the fear of staying single.
11
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13