Couples' personalities converge over time to make partners more and more similar.
235
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
The single biggest predictor of love is proximity.
30
One in five long-term love relationships began with one or both partners being involved with others.
177
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
687
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81