Oh I really like this one! I guess you could take it as pedophile stalker weirdo OR you could read it as fairy godfather/protector, 'someone to watch over me'.
I see it as the protector. I mean he isn't obsessing over Harry's genitalia... know what I mean? Guh, not saying this well. The way it felt overwhelmingly to me was of a benevolent protector.
And I can see where, after all that time, he'd like Harry to wake up and catch him and just *maybe* figure out that he's had someone helping and secretly healing him all these years. Snape has such a unacknowledged role anyway... I can see where he might like to see the boy he cared for acknowledge his efforts!
This is really, really lovely and somewhat poetic.