They'll kiss and make up.

[DFW]

2. Normally, I'd agree wholeheartedly.

However, in this case, there is a long “paper trail,” for lack of a more modern expression, of concentrated intense acrimony between two immense egos. IF they try the “dinner and a movie” routine, the whole world will throw the whole well-documented package of nasty comments about each other back in their faces, and ask, “what about….?”