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Zoe Margolis is a journalist and writer, famed for writing the Girl With A One-Track Mind blog. You can find more information about her work, including on sexual health, at her website. She's on Twitter as @girlonetrack.
All good relationships are built on respect, trust and consent - and the one at the centre of this film contains none of that.
Not only does the film look like a bunch of sexist tropes strung out in a row, but if Christian Grey's knots are anything to go by he's rubbish at kink as well.