While reading before bed tonight, Cassie called me in her room and here is what I found.

They were laying together by Cassie while she read. Every now and then Buffy would move her tail and Lightning would try grabbing it with his paw and chewing on it. Buffy didn't seem to care at all.

They are getting along very fact as I'm writing this they are chasing each other and kinda pouncing at each other. I'm quite impressed with all of this as Lightning came home just 8 days ago and for a majority of that time they were separated.