Kay so I know there are a LOT of these fics about, but please just bear with me because I know where I'm going with it, it's angst eventually leading to fluff, dunno how long depends whether people like it really. So I hope you do :)

Disclaimer: A girl can dream right?

Even in his darkest moments he had never explored the idea, but anger is the devil's doorway, and once he's in the door, the devil does as he pleases.

Betrayal, betrayal was what he felt above all else, and it cut right through his heart and into his soul. How could she do this? How could she lie? And no number of perky blondes in too-tight dresses had managed to take his mind away from the shattering inside his chest. He hadn't really been able to do anything with them anyway- kisses felt too forced, caresses too cold. Nothing, he had nothing with them compared to the natural intimacy he felt when he was with her.

The traitor.

He couldn't say her name, couldn't even think it. It was easier to call her traitor, jezebel, heart breaker. It was just easier that way, and oh, how he needed his life to become a little easier again.

It had been three weeks, almost to the day, since he found out. Three weeks his heart had been falling apart in his chest, three weeks he'd been trying to hide it, three weeks he'd been living like he used to. Three weeks too many, but three weeks it took for him to finally snap.

Castle sat staring at his laptop screen, reading and rereading what he'd written over and over. It felt wrong on so many levels, no matter how angry he was with her, he just wasn't sure he could do this. There was a part of him which liked it. Liked the way it had felt to write it, liked the way it had eased the pain in his heart a little, liked the thought of finally getting back at her. But at the same time, no matter how much he might deny it, he still loved her and he knew that he would hurt her. Badly.

But as he sat there downing yet another glass of bitter-tasting liquid, unsure even of what particular beverage he was ruining his liver with now, he felt anger flare up within him again. Anger so strong that it consumed him, overwhelmed him, pushed him over the edge into a person he didn't even know he was capable of being. The devil rose up within him and took him over. Made him make a choice he never would have made before she broke him, made him make a choice that would break her too, a choice which was only a phone call away.

'Gina?' he asked as his ex-wife answered her cell 'You want that final manuscript?'

Yeah it's short I know, next chap will be up soon and we'll be going over to Kate POV. Lemme know what you think :)