Rosen was born in Cornwall. She studied psychology at Oxford before moving back to the West Country.
She now lives on the south coast of Devon with two imaginary cats, fantasising about getting a real one.
Readers have downloaded over 200,000 copies of Rosen's books. Several titles have broken into the Amazon charts, including a number 1 humorous fiction bestseller.
Devoted boyfriend, Ross Turpin, wakes up to a shocking sight: a pair of unfamiliar women's knickers are lying on his bedroom floor. Having no idea how they got there, Ross sets out on a mission to establish their origin.
His exploration leads him through a minefield of hideous women and repugnant situations, as he struggles to understand what went on during the night that might have changed his life forever.
~ 13,000 words