Fox hates Cruz as much as Trump. Hope Cruz is ready for it. They are having him on shows tonight, being so nice. He needs to not be fooled by it.
The GOPe (includes Fox News) hates Cruz and Trump. Right now the GOPe finds Cruz a useful tool. If he succeeds in damaging Trump they will eventually turn on him or find a federal judge somewhere to rule he is ineligible. If he fails then he will just go off into the sunset after the SEC primaries and Texas where he still may be useful to the GOPe.