Roleplay idea: The two characters meet at a club and hook up, thinking nothing of it since that's what they normally do. Then the next day one of the characters (who's a student teacher) gets a call that they'll be helping out/teaching at a new school so they go and once they get there, they see the person that they hooked up with last night is in the class that they'll be teaching in. Once they both notice each other in there, they start having a friends with benefits thing going on and try not to get caught by any of the other students or teachers in the school and then it just goes on from there.