Alexander and Philip did not enjoy a loving father/son relationship. They didn't have a lot in common, from what I can see.
Well, that's not surprising seeing as how Phillip was away a lot on campaign. Alexander was very likely his mother's son more than he was his father's.
Let's remember that the pages you refer to were not the little girly boys with page-boy haircuts of fairytale fame. These pages were tough young louts, hardened by years on campaign. They were not delicate in any way. And they were young men - not boys.
As I recall reading, the pages were under the age of 18. At about 18 or so, they went into the army. So yes, they were at times, boys.
With respect, steer clear of Alexander according to Oliver Stone (LOL). Though, having said that, I did enjoy the movie - but strictly as a confection.
Actually except for the psychological angle of Alexander in the movie which was pure conjecture, Stone was extremely accurate in his movie almost to a fault.