"Never pegged you as someone who's scared, Jack." Yeah, he's goading a little bit. He got the shit beat out of him for you, you can let him have this at least.
"Like I said, you don't have to solve his problems. Be there for him. Make him feel less alone and if you really want to do something to help him? Ask him what you can do to make him feel better. You don't have to take the world on your shoulders every single time, you big dumb hero."