A recent Modern Love column in the New York Times drew millions of clicks and shares. It was written by a woman who used a psychologist's questionnaire to fall in love.
The questions include: "Would you like to be famous?" "When did you last sing to yourself?" And "What if, anything, is too serious to be joked about?"
On The Daily Circuit, we talk to two guests who are immersed in the data behind online dating.
Have you used online dating sites, particularly OKCupid? How good were the dates you went on as a result? Did the matches you made lead to a long-term relationship or marriage?