One sexual difficulty that is explosive involves one partner requesting sex and being repeatedly refused. (Photo: AFP)

A twisted fan of Fifty Shades of Grey was recently jailed for 24 years after he tied up his girlfriend before letting her get raped by a stranger.

The 27-year-old man, obsessed with bondage was also given 24 lashes of the cane after a trial in Singapore.

According to reports, the former police support worker suggested having a threesome with his partner of two years and another man. However, when she refused, he hatched a plan to trick her into the sex act.

He took his girlfriend, who works as a nurse, to a hotel room where she agreed to be tied up and blindfolded before the pair got intimate.

When a man started touching her she naturally thought it was her lover.

However, she started struggling when she noticed two hands were around her waist and a third was checking her blindfold.

She managed to wriggle free and remove her eye mask to discover a stranger had been having sex with her. Horrified, she left the hotel.

Police later arrested the boyfriend, and the other man, 22, at the hotel.

At a trial, a court heard he floated the idea of a threesome after watching the erotic movie Fifty Shades of Grey and developing a fantasy for "soft bondage".

After his girlfriend rejected his suggestions, he conspired with a stranger he met online to organise a threesome without her knowledge.

He was sentenced to 23 years and 11 months in jail and 24 strokes of the cane.

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