You know, I had saved this story into my favourites folder after only getting half way through That is a fantastic compliment -- thank you so much for letting me know that!
And yes, I'm so happy to hear you say you felt the way Snape behaved and reacted to Harry had a tinge of the erotic all along. That was certainly my attention, so it's great hearing that came across for you. I had a good time playing with that, especially when Snape lingered at the room where he often found students in their trysts. Having him immediately picture a scenario of passionately scolding Harry at that juncture (his version of sexual encounter at that stage, unwilling as he was to admit his attraction yet) was absolutely meant to act as that kind of tip off. Though perhaps not quite as large as a tip off of Snape rushing after naked!Harry. :D
Thank you so much for your lovely and detailed comment!