Rose's hand reached up towards him, before her strength ebbed and her arm slacked. The Doctor caught her fingers and gently brought her palm to his cheek, pressing it there as Rose smiled weakly.
"You're gonna be alright, okay?" he murmured. "We're gonna get back to the TARDIS and I'm gonna get you better. Hey?"
Rose gave him another small smile, but said nothing. Her gaze drifted away from his eyes and to where his hand encased hers on the Doctor's face. She gently brushed her thumb against his cheek, her smile fading slightly. Tears sprouted once more in her eyes.
"My Doctor," Rose said softly as she caressed his face with the little strength she had left.
"That's right," the Doctor nodded. "Forever yours. You just gotta hold on. Hold on, Rose. You're gonna be fine."
"You don't… have to lie," Rose murmured. "For me… I know, Doctor… 'S okay."
The Doctor felt his hearts stop. Tears brimmed in his own eyes and he brought Rose closer to him, his head resting against hers.
"Please," he whispered. "Please stay with me. Please be okay. I… I can't … I need you to stay."
He could feel Rose shaking in his arms. Her breath coming out in small coughs.
"Don't go," the Doctor sobbed. "Don't leave me."
"I… I'm sorry, Doctor" Rose forced out, before her eyes closed and she went still in his arms.
"Rose?" the Doctor shook her still form gently, his voice cracking in pain. "Rose, please! Rose!"
There was no answer from his companion.
Tears falling freely from his eyes, the Doctor cradled her still form in his arms sobbing out her name as if it could bring her back.