Couples' personalities converge over time to make partners more and more similar.
235
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
464
One in five long-term love relationships began with one or both partners being involved with others.
177
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104