I don't remember exactly what it was but it was something along the lines of 'come back Tamamo'. I guess this is a 'douche move' because it calls out the fact that they were gone, while pretending to be dead. I don't really know, I'm just guessing.
As for what they have to do with each other, it's a friend trying to reach another friend whom they didn't really know if they were dead or not.