who is that blonde boy?

Weakly trying to lift his arms to grab Thomas' face as the fragile blonde took breaths with the help of the oxygen tank, "Thomas you're going to grow to be 30, 40, even 50... but I'm going not going to be there, I'm going to stay 23 forever and in the ground come December."

"no! I'll find a way to find a cure! " Thomas replied as he tried to keep the tears from falling.
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when Thomas Edison starts his intern year to become a general surgeon he finds himself starring at Newt, a boy with an incurable disease.