Disclaimer: Naruto isn't mine, the plot it.
Warnings/Notes: Implied GaaSakuSasu Italics are thoughts
He closed his eyes, his head was spinning, throbbing, everything had blended together, nothing seemed real to him anymore, but he could still reach out and touch it, that was proof enough for him. He crushed her body underneath his sand; finally ridding himself of the pest that kept coming back to him. He laid her bloody corpse beside him, her pink hair momentarily astray between his long fingers. His eyes were faded, and he stared at her, feeling the anger rise again, feeling the need to kill. She was the reason he was no longer alive anymore, and she was the reason he couldn't die, she was the reason he was forced to be somewhere in between, she was and now she isn't.
Left him for that Uchiha boy like the whore she truly was, she left him no choice, the boy had to die first of course, then her, but they had their fun together first, just like old times, just like before she decided he wasn't good enough for her anymore.
"You shouldn't have done it Sakura, I'm a Kage now you gold digger bitch, what'd you think of that, you could've had it all, but you wanted him." He whispered at her though he knew she could no longer hear him. "I deserve better than you anyway." He said standing at full height now, he'd had enough of her, dead or alive, her blood didn't even interest him. No, never hers, she wasn't important enough to waste the time on.
He listened to the sound of the leaves break as he stepped on them over and over, like bones snapping into the silence of the night. Even when this forest was pitch black it was the easiest place for him to unwind, it felt so homey with the aura of death surrounding it. He found a light, finally, and then it was consumed by the darkness as well, the hatred and jealousy welled up inside him as he came to realize the truth, he was nothing but a tool without her, without someone to love and give him purpose. He screamed and started attacking everything, breaking trees in half, and demolishing the only place he had left to run to. He was through being a tool, and he was through being a runaway. Maybe he was insane, maybe he really didn't exist anymore, maybe the Shukaku had really consumed him, become him, but he didn't care.
I have the control now, she can't ever hurt me again.
He never bothered with any other girl or woman after that unless it involved killing them, torturing them to death. He blamed every woman for Sakura's betrayal, something he never got over, and though he left well enough alone… any female foolish enough to get near him perished.
When Sakura decided to leave him…she had no idea she'd take from him the only thing he'd had left.
Something many thought had left him long before she had… his humanity.