My thought is, that I pretty much no longer care how/where he does it, but it's LONG past the time for him to speak his peace on her infidelity. He's giving his silent consent, and WITHOUT such a talk, I agree that his "darkness" seems kinda creepy.
I think he's dithering, that's what I think.
I"m sorry, and I know that I was out of town for a week, but I must have missed the part where he wasn't going to talk to her when she came down. I thought that was what we had all agreed to.
