Oh, I love the way that this story just keeps twisting; there are so many revelations! The first part where Lily recognises who the "pile of black robes" really are was so touching. I really thought we were in for a weepy fic. So I was pleasantly surprised that things resolved happily!
I really like the idea of them being each others secret spying contacts (plenty of opportunity for some sneaky sexy shenanigans there, I reckon!) And these lines: Severus remarked with a smile. “I’m surprised you waited until she left the room to jump me.”
Remus laughed. “Took all my willpower to do so. If I could I’d shag you right here on this couch.” are just lovely!