I have finished the book so wont answer the first part.
As far as if Jamie declared he were gay? Its so hard to picture, kwim...in the book the other characters say the signs were there for Daniel so if that was the case then I probably would handle it better because you would think I had my doubts already. I hope that in that situation I would be understanding, though obviously devastated. I dont think that I would ever take it personally.
But since there are no signs of my hubby being gay it would be a total shock and probably I wouldnt believe him and would freak out or something, I dont really know.