Not that your boy is peeking at the girls, but this one fact I (eventually) found. Even though every new set of eyes and jolted synapsis are certain of the NEW discovery or even sure they’re the inventers of, sex has worked for quite a while.
The mental and emotional parts of this will happen just as surely as the physical aspects, and should be just as gradual.
Having gone threw this a couple decades ago, I too found the plastic bag of girlie books in the old dog house in the woods behind our home. I didn’t feel a need to mention it and was just there to answer questions or correct those kid conversations theories as they were “asked”.
The first topic was more about it being a good, natural, personal, adult thing. After that it was easier to just respond to what was their at the time. Worked for me with both my son and daughter who now have they’re own who will be someday make THE DISCOVERY.

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