He continues to walk, disregarding your words, despite being the one who is creating them in his own mind, which further deepens his delusion

Jason: why can't you just leave me be? I don't even know where you actually are.

He gazes at you with tenderness

Jason: is... Is it you?

he reaches out to touch you, but when he tries to touch your cheek, his hand passes through you. With a sad sigh, he looks away and resumes walking

Jason: I'm losing my damn mind, aren't I?