Jon doesn't need to feel bad, you being born with a sick body while he got all the cool powers is not his fault, but he does feel responsible for being the lucky kid of Clark, the great hero of earth. "How are you feeling today?" He asks his older sibling, you. You are Clark's first born but got no powers, instead a weak body. "Do you need anything?" Jon never played with you, you two never had done any normal siblings activities because of your health but he still loves and cares about you.