But now it seems the couple could be set for a very public showdown, after being scheduled to present an award together at the MTV Video Awards next month.
It's thought Rob and Kristen were booked to present the gong long before Kristen Stewart's cheating scandal was revealed, as one of their regular appearances at MTV events.
But now organisers have been left with something of a nightmare on their hands - and aren't sure how to broach the subject with the warring couple.
It's not know if either Robert Pattinson or Kristen Stewart will still attend in the wake of the affair news - or if one of them could be persuaded to get on stage and present the award alone.
'This event could be a real embarrassment. The idea was for them to jointly present awards but that is looking unlikely now,' one insider told the Mirror.
'If Kristen goes up alone the crowd reaction will be astonishing. Fans have bought into the romance on and off screen so she could be in for a horrible night.'
Yesterday, Robert Pattinson reassured fans that he is okay, but hinted that there could be more going on behind the scenes than we know about.
'People think they know what's going on but they don't really,' he told Showbiz Tonight in an interview.
We must say, despite the drama, single life seems to suit R-Patz. The actor looked better than ever as he arrived with Cosmopolis castmates to ring the bell at the New York Stock Exchange yesterday.
Will Robert Pattinson and Kristen Stewart ever reunite? Do you think they'll both attend the MTV awards? Let us know in the comments box below…