[He knows that look well. He knows Mithos knows all about his self-esteem issues--it's part of being childhood friends, knowing all these things. Because of that, he has a good idea what that look is supposed to stand for.]

Well, if you're sure... [Jeb watches Mithos grab his books and shove them in his bag.] Well, my brother isn't doing too well with his grades. I... I really don't want him to drop out, so... I know you two don't get along very well, but it would help me a lot if I wasn't the only one trying to help him. Plus, we should probably study too...

[Translation: Jeb doesn't like his home, even with his brother there with him. Extra company would help.]