The beast raged and Seamus saw red. Dean had never, never said something like that to him before. It was the last thing he would ever expect from him. Dean had a direct line to his heart, and no amount of macho posturing and armour could defend against an attack from Dean.
The second push was the straw that broke the camel's back, and Seamus balled up his hands into a fist. "Fuck you!" He growled, and rushed at Dean, lashing out with a hard punch aimed straight at his best friend's face. He wasn't angry at him, but Alecto wasn't wandering around in the streets where Seamus could beat her into a bloody pulp. He would settle for the first person to cross him, even if that person was Dean.