Blackboard by lemonoclefox
Rating: NC 17
Word Count: 76,800
Summary: Castiel Novak is a college English teacher, in a rather inappropriate relationship with Dean Winchester, who happens to be one of his students. But although their arrangement is one that works perfectly for the both of them, Castiel is starting to worry that maybe keeping it impersonal will be harder than he thought.
Here’s a smutty friends with benefits fic that doesn’t spend much time on social interactions and goes straight to the bedroom. It starts as a one night stand between total strangers and soon becomes clear that Cas, being recently hurt by his ex-boyfriend Balthazar, would like to keep things between them as impersonal as possible. One way to do it is dom/sub flavored role play during sex. It is very interesting to see reserved and shy Cas turn into a dominating guy, while flirty seducer Dean submits to his every whim, and how they switch back the moment they’re finished. Dean is at first happy to oblige and takes full advantage of their no-strings-attached relationship. However, soon emotions start to bleed, unwanted feelings overwhelm them and even dating other people doesn’t help. On top of all smutty goodness, we get delightfully pining Dean and emotionally confused Cas as well.
Oh my, this fic just has all my favorite kinks in one nice package. And the best part? The 16 chapters are neatly divided in half - first we get the story from Cas’ POV and then we see exactly the same events through Dean’s eyes. Alternating POV is among my favorite things; here, the author does an excellent job with both characters. I never felt bored reading the same story (especially the porny parts) twice.