Swift Brothers series Riley Hart

So I just finished Easton and the next book is Rhett. If you're also reading this series, do we think Rhett's guy is gonna be Cass? What do we think?

Also, wasn't Rhett married to a woman (and getting a divorce in the first book) if I'm not crazy and that's true isn't it a little weird to not completely mention it in the second book at all, not even in passing?