How to cope when you've fallen out with a friend who you happen to work with

[JuliaShavesSheDoesntKnowWhatSh]

Just that, basically. I've fallen out with my friend. I need some space to heal, but we work together- in a field where there is only we two, plus his wife, who happens to be my best friend as well. Any tips on staying professional?

What have you fallen out over?

If it's simply a difference of opinon put it to one side and concentrate on the work in hand.

If it's more complex perhaps you should give consideration to holding a brief 'clearing the air' session if you're concerned that you won't be able to remain professsional while in their presence.