Ewww! Just reading FIFTY SHADES OF GREY can give you herpes

Those who've flicked through a much-shared copy of the erotic love story, or most popular library books, may have overlooked secrets hidden between the lines.

But a Belgian team has discovered the most borrowed titles at an Antwerp library contained icky elements of past lives.

They found herpes simplex virus 1 - associated with cold sores - clinging to steamy pages of Fifty Shades of Grey and more on Tango, another romance title.

Scientists at the Catholic University of Leuven in Belgium studied 10 of the most popular books on loan at a local library.