When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Couples' personalities converge over time to make partners more and more similar.
235
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
You burn 26 calories in a one minute kiss.
605
40% of people who are rejected in romantic love slip into clinical depression.
72