Roger Ailes just called. He is a great guy & assures me that "Trump" will be treated fairly on @FoxNews. His word is always good!— Donald J. Trump (@realDonaldTrump) August 10, 2015
If this seems confusing, then you must have missed the insane fight Donald Trump picked with Fox News over the weekend. You can read all about it here.
But the upshot is this: Donald Trump needs Fox News more than Fox News needs Donald Trump. So in some ways, the interesting question isn't what Ailes said to Trump, but what Trump said to Ailes.
After all, for a network that calls itself "fair and balanced" when it is anything but, a promise to treat Trump "fairly" might mean less than Trump hopes.