A/N: SPOV
Severus was sitting by the lake, shocked at what he had done to Nymphadora. He wasn't one to lose control, nor was he one to simply invite his services onto someone who wasn't already a part of the community or at least interested in BDSM.
Instead, he found himself drawn to her, and admittedly aroused by her. But she's trying to date that pillock, Lupin.
He took stock of himself, and the situation. I ran away like a coward, missed my starting time for patrolling, and now I'm hiding out by the bloody lake like I used to as a schoolboy.
He got up, understanding his need to do his duties and to face Nymphadora as he should. The grounds to Hogwarts, of course, was clear. So he went back inside to patrol the corridors as he was supposed to do.
She probably already ran off, warning Albus and the entire bloody Order that I'm some ruddy Libertine.
The ground floor was blessedly devoid of students, so he expected to find everything in order as he went downstairs. His door was still left wide open, and he cursed at himself, thinking that Nymphadora would have been at least kind (or, in this case, furious) enough to have slammed his door shut when she left.
What he was not expecting, however, was to see her making herself comfortable in his leather-clad sofa seat, perusing through his books. She was too engrossed in whatever she was reading to have noticed his entering.
He cleared his throat, loudly and with every intent to get her attention. As she was startled out of her reading, she moved the book upward just enough for Severus to recognize the title.
Why in Merlin's name did it have to be that book?
"Enjoying yourself, Tonks?" He drawled out, spitting out her last name like it was disgusting.