[He can't help but feel like he caused this because he thought of Ion as useless, once. It was really just Luke projecting, he kind of knew that now, but still... but still.]

Yeah, but... [He's still tearful, and he tries to fix this before loosening his grip on Ion.] That's not right, somehow. You're my friend, but not just because you helped me.

[Even though Ion had helped him from the beginning.]

I think you saw the real me before anyone else did. [That sounds like a good answer. He's satisfied with that.]