I love seeing Snape succumb to his carnal desires and hate himself afterward - and also feeling things he doesn't want to, like yearning or possessiveness, and hating himself for that, too.
Snape dropping his mask and being human for a moment, and then going back to his nasty teacher persona like nothing happened. - related to this, I love it when Snape is being a confrontational arsehole who keeps pushing it and pushing it when Harry stands up to him - and Snape is the one who breaks. He just cracks for a moment, and Harry sees how emotionally desperate Snape is inside.
Thank you very much, this certainly was something entirely different.
Never stop writing.
Amy