Robert Pattinson and Kristen Stewart in new war - over Ellie Goulding
Robert Pattinson and Kristen Stewart are fighting over their mate Ellie Goulding
Robert Pattinson became pals with Ellie Goulding when she featured on the Twighlight soundtrack
Robert Pattinson's ex Kristen Stewart had an affair with Rupert Sanders
Robert Pattinson and Kristen Stewart split eight months ago
When your mates split, it's never easy to stay neutral.
A source reveals: ‘Ellie's really good mates with both Rob and Kristen and used to spend time with them as a couple.
'Since their break-up, she still hangs out with both of them, but separately. Things are proving quite difficult at the minute.'
Ellie, 27, became pals with the pair when she featured on a Twilight soundtrack.
But things have become awkward in a row over her performance at California's Coachella Festival in April.
The source continues: ‘Ellie wants both her friends to be there. It's one of the biggest events of the year for her, especially as she's starting to make a mark on the American market.
'But she knows her mates can't even be in the same space as each other right now, so she's feeling caught in the middle.'
The new row has apparently started a renewed period of bad feeling between Rob, 27, and Kristen, who split eight months ago.
They'd been trying to make things work after Kristen was caught cheating with Snow White & The Huntsman director Rupert Sanders in 2012 - but last May, Rob finally called it a day.
Although it initially seemed that they wanted to be cordial - Kristen, 23, was seen visiting Robert's rented Beverly Hills house in October and then spent Thanksgiving with him - the truce hasn't lasted long.
Our source says: ‘Things started to turn sour again because Rob just couldn't trust her.
‘When Rob sold his old house, it was a sign that he's moving on. Kristen was hurt as that was their love nest while they were dating. It felt like a kick in the teeth.
'Then to add to her woes, Rob started hanging out with some of her friends. She thought that was an odd move.'