If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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 Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
28
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81