40% of people who are rejected in romantic love slip into clinical depression.
72
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
The left ear is more responsive to words of love and emotion whispered into it than the right.
44
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Couples' personalities converge over time to make partners more and more similar.
235
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
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81