My lovely bride has a similar issue.
Our dog, Lela, makes no secret that I am her favorite.
Last time I returned from overseas, she made the mistake of bringing Lela to the airport. Of course, being a dog, Lela beats my wife to me, and immediately does the "crazy dog freakout because 'her' person has finally come home" thing.
My wife catches up, we start to embrace, and Lela jumps back up, pushing off on my wife, effectively pushing her away and resumes her homecoming freakout.
I'm pretty sure this translates to "Get away from him, he's MINE!!!" in dog.
This move did not endear Lela to my lovely bride.