Vampire: the restore (of Nathaniel)

This is the first time I went so far in Nathaniel's romance, and he was abduced, vampirized and than resurrected. He's not comfortable anyway because he babbles about "oh i feel strange oh i'm so weak" [he had us stop in the middle of Trademeet...] and says "oh charname i want you to tell me if you love me, let's sleep together" on the second talk. Anyway, I read the journal: Elhan or war sage might know something. I tried them both, but none has any answer choice about Nathaniel, and I think I'm going to lose him.

Is it a bug? Am I doing something the wrong way? Do I have to leave things as they are?

Please, help!!