KILL ME!" And then Newt's ...

KILL ME!" And then Newt's eyes cleared, as if he'd gained one last trembling gasp of sanity, and his voice softened. "Please, Tommy. Please." With his heart falling into a black abyss, Thomas pulled the trigger.
 James Dashner

Quotes from the same author

Frozen by fear. Not able to move. Your mind screaming
 James Dashner
Vince couldn't stop talking, spilling thoughts that had obviously churned inside him for years. "We could've stopped the spread of the disease a lot better than we've been able to cure the disease... Thought the magical cure would save them in the end. But if we wait any longer we'll run out of people to save.
 James Dashner
i felt her absence. it was like waking up one day with no teeth in your mouth. you wouldn't need to run to the mirror to know they were gone
 James Dashner
Though he’d never know for sure what had happened to them, his mind was super talented at imagining the absolute worst.
 James Dashner
No. I kind of accepted it, in a way. That saving you was worth losing what we might've had.
 James Dashner