It's true that Jack has lived for 500 years, but immortality? Is he serious? Does the man not know that Jack doesn't remember a thing from his life so it's pointless to ask for any answers of him? Seeing as Jack showed you nothing but kindness and seems to be able to restrain himself from hurting you, despite his doubts about it, you decide to help him. He might even know of a way to return back to the house.
As if your thoughts were too loud, the man turns to face you.
Millennium Count: “Looks like we're not alone. Tell me, who are you?”
Not knowing who the man is or what his intentions are, you remain silent.
Millennium Count :”Ah, forget it! I don’t have time to deal with you.”

I'll add the winner on steam and give them the key in chat.