One in five long-term love relationships began with one or both partners being involved with others.
177
The single biggest predictor of love is proximity.
30
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
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Couples' personalities converge over time to make partners more and more similar.
235
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
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