Are you missing anyone people in fandom pair Roy with? Well, Maes (would laugh). And Havoc (uhhh, chief?), and Olivia (would probably offer to help you tie him up). And more obscurely, Kimbley. And Al.

As to who this Roy's paramour is, given whose journal you're on, is there any doubt? And as for a growl, I think you'd be lucky if you just got a growl. It's more likely that you're moments away from being smacked into the air by a giant alchemy hand. Which will then give you the finger.