Separate research suggests those in arranged marriages - or who have had their partner chosen for them by a parent or matchmaker - tend to feel more in love as time grows, whereas those in regular marriages feel less in love over time.
To test the theory of behaviour affecting emotions, Prof Wiseman, of the University of Hertfordshire, held a speed-dating night, where some of the prospective partners were asked to act as though they were already in love with each other. Just as people feel happier when they force their face into a smile, so pairs of people behaving as if they find one another attractive became emotionally close.
These people will have dates on a regular basis, and they may or may not be having sexual relations.
He has interviewed more than 100 couples in arranged marriages to assess their strength of feeling and studied his findings against more than 30 years of research into love in Western and arranged marriages.
His work suggests that feelings of love in love matches begin to fade by as much as a half in 18 months, whereas the love in the arranged marriages tends to grow gradually, surpassing the love in the unarranged marriages at about the five-year mark.
If you are just getting back on the dating scene or if you have never been out of the dating scene, but you are finding it difficult to meet people, then you should definitely give speed dating a try.
While it does not give you much time to get to know someone, it does allow you to meet a lot of different people.