I can't believe some people are so literal here sometimes! Do you believe everything you see, read and hear about them? Unless they start fighting on-stage as the Davies brothers used to, I think they've a lot of time for each other still.
They're life-long mates and were at school together. Yes it's true that things were jaded between 1993-1998 because by then they'd spent a long time living in each other's pockets and that's tough on any relationship. The band were at a low ebb creatively at that point which is to be expected, having been together in some form for sixteen years by then.
However not for nothing did they name their 1986 album Brotherhood*. That's one of the greatest things about New Order: they're definitely Gestalt in that they're greater collectively than the sum of their parts.
* They wanted to call the album Fuck but Wilson told them the likes of Woolie's etc would not stock it if they did!