Mathilde Madden 
Peep Show [EPUB ebook] 

Naughty Imogen likes to watch. When her boyfriend Christian is out at work she spends her evenings spying on the neighbors through binoculars and viewing her secret porn collection. Most of all, though, she likes to go online and pretend to be Christian while she chats up men on a Manchester gay dating site.
But when her latest virtual beau and borderline obsession ”Dark Knight” asks for a photograph, her voyeuristic games become complicated. Suddenly Christian is being drawn into her sleazy thrills without his knowledge. Imogen”s getting more eye candy than she ever dreamed of, but at what price?