Board Thread:General Discussion/@comment-1650307-20170727054156/@comment-2175012-20170728021209

But anyway, with Sam, there isn't any indication that she is bi or whatever (though with Luna, Savino had mentioned that Luna was written in a way to be a blank slate, meaning that she is whatever you want her to be). Just because she smiled at the end doesn't mean that she knew it was from Luna. Luna might not have even put her name on it. If anything, given that Sam will be returning in an upcoming episode, we have to wait most likely.