As for that second question, I think they were “helping each other out”. Both of them, surely, had already used their own hands, but I think they were curious to see how mouths felt, as they couldn’t really do it on their own.

I was also confused about the final death/hunting scene, but thanks to everyone for clearing that up. Another question for anyone who thinks they know the answer: did Clare’s father and brother actually see either A) the Henry who was shot, or B) the Henry who traveled to the meadow in time to see his future self getting shot?

Another scene that confused me was the one where both Henry’s are 15, where the future Henry is visiting himself from next March. It’s the scene where the two are in the room and one Henry accidentally unlocks the door and the other Henry jumps up to stop his dad from coming in. The author mentions something along the lines of before they hit puberty and knew things about girls. Are both Henrys actually having sex with one another? Or are they merely masturbating together? I was taken by surprise when I read this scene because it practically came out of nowhere and th e author wasn’t very clear about it at all. Does anyone have an explanation on what actually happened?

He can’t appear to her if he’s dead. He can only appear to him if he is alive and travels into the future beyond the time that he is dead. I believe in another scene he visits his future daughter who mentions to him that he’s dead, so he did it at least twice.

I don’t know about your other questions, having read the book too long ago to remember.