An article in the Royal Society of Chemistry's flagship magazine Chemistry World caused a stir today when BBC 5 Live, the BBC website and several national newspapers picked up the story which explains why lovers' early passions subside after about 18 months when their  'lust molecules' fade.

On its front page, accompanied by a picture of  Brad Pitt in a clinch, the Daily Express advertised its full inside page story about the lust molecule and the 'cuddle molecule' that replaces it to keep a relationship going. 

Watch this space for a not-to-be-missed survey on the subject with an enticing prize for participation.