Yeah, but I've been feeling horribly uninspired as of late, and I'm working on another fic at this very moment. But you're right - never say never. We shall see. :)

Oh, there is, without a doubt, a connection between Snape and Lily. Aside from the fact that, when asked if either Remus or Snape had a crush on Lily, JKR only answered for Remus and easily side-stepped the Snape part, the whole potions thing is certainly a factor.

I happen to see it as more of an unrequited love, on Snape's part, than mutual, but Lily probably felt SOMETHING, as well. In regards to the pensieve, I think that Lily's willingness to defend Snape probably has a lot to do with whatever relationship they had, especially since she seemed SO surprised that Snape insulted her after she had tried to help him.