Maybe the author isn't into that sort of thing? Not all erotic fanfiction is about yaoi/slash.
The books go into a massive amount of detail of how repugnant Jurgen is (although whether it's because of his anti-psyker field or his personal hygiene is more of a chicken/egg question), so that probably puts paid to any suggestion of Jurgen and anybody, with the exception of his extensive holopic collection of *cough* specialist images.