He's 11 now. At 11, I sneakily read stuff I wasn't supposed to, and my mom barely even cared about the age appropriateness of the fiction I was reading (so I didn't even need to sneak it, but I did). It's just part of growing up. Be a safe place for your kid to bring questions.

In your presence. You don't let him read/watch whatever he wants in your presence. You literally cannot prevent him from reading/watching what he wants when you are not around - at school, at friends' homes, sometimes even in your own home when he's alone in his room. And that's okay, actually.

I've always taken the "We haven't talked since..." as Fenris and Hawke just did not talk about the elephant in the room, not that they literally did not speak. I mean, I usually get the romance scene early in Act 2 and then still take Fenris everywhere anyway, so that made the most sense to me.