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
Couples' personalities converge over time to make partners more and more similar.
235
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
40% of people who are rejected in romantic love slip into clinical depression.
72
Two in five people in the world marry their first love.
270
