I've read that the Pages are the seeds or the precursors for the energy of the Aces of their suit; i.e., the Pages are like a seed taking shape and showing the direction it will grow in (what type of plant it will be, according to the suit of the Page) and then you can glimpse further into the nature of the Page, by looking at the Ace of its suit, to see what the flowering bud will look like.
For example, if the Page shows as the Page of Swords, in my mind then he will bring the energy of the Ace of Swords to the relationship; and the potential of what that Ace implies.
So you could see the Pages as messengers about the energy or feel of the relationship; the potential that the particular suit implies would be what follows.
This, of course, is just about how I read them.