Kowalski is such a pathetic, immature loser for being so jealous of Ray Vecchio and hating him for being such a great friend to Benny. The fact that RayV calls Fraser "Benny" and Kowalski has no special name for Fraser tells me everything I need to know about Fraser's and RayV's friendship being the true one that will remain close and last a lifetime. Canon Fraser would not stay friends with anyone as jealous and childish as Kowalski, which is why a romantic relationship between them is not realistic or believeable. F/K shippers are kidding themselves about the relationship and have to tear down Fraser's and RayV's canon close friendship to make it believeable.