The collab's coming up soon · 3:30pm Feb 20th, 2016
The collaboration, the clopfic, I mentioned the other day with Anathema is done and awaiting moderation. I've been told that the story was actually accepted an hour or so ago, but Anathema took it down just before getting the message of acceptance to do some minor edits.
So, if you want to read a second person anthro clop story with Luna, I'd suggest following Anathema. It'd be easier than digging through the groups or searching for the story by yourself. Plus, they told me that they've got more clopfics planned, so if you're into clop, follow them and let them know I sent you.