Severus cheats to hurt Harry

[taynney]

I spent the last few days reading The Apple Tree by Philo and found myself needing more of "that" scene, the one in which Severus leans over Harry in potions smelling of another man, and Harry is devastated.

Can you rec me more of the same? Stories with quality writing and plots are preferred. Novel length is life. But anything with Severus cheating on Harry to hurt him.