They are...and I believe, if given enough time they could have had something special. Just the way he leans into her, and she closes her eyes, shows that she is falling for him. Plus, they look so sweet together.
Who knows, maybe they will do another Crossover, and they will have Calleigh and Mac together doing more then working on a case.
I've completed the second story to "MaCalleigh", and I'm now working on the third installment called....
"Macalleigh's 1st Christmas", where one month old Macalleigh, shares her first Christmas, with her mom, dad, and NY family. This should be out around the end of Nov/Dec, just in time for Christmas.