They sound like good brothers, then. [But he doesn't know the half of it.]

I am eager to meet them, as I am eager to meet your father. Seeing as we are related. [He's still skeptical, but he wants to see him with his own eyes before he casts judgement.]

Sometimes only family can see us as we are, for better or for worse. Generally, I've found it's for worse, but you seem to have better luck in that regard.