Robert Pattinson found messages from Rupert Sanders on Kristen's phone on his birthday.

In this day and age, all a bloke wants on his birthday is a cheeky picture message or two for the private collection.
But on the morning of R-Patz’s 27th he had a quick squint at her text messages while she was in the shower — only to discover she was back in touch with his nemesis RUPERT SANDERS.

He is the married film director papped with a dangerous case of party hands while with Kristen last year. The snaps sparked Kristen and R-Patz’s first split, though they had reunited by November. But the old romance has come back to haunt them once again.

A source said: “Rob was looking at her phone on the morning of his birthday as he wanted to take a picture of something when she was in the shower.

“Suddenly this message flashes up and it’s not what he wanted to see. He got straight up and left."

“Despite Kristen’s pleas, he told her not to come to his birthday party at a friend’s that night. He’s extremely angry and upset. No matter how many times she calls or texts, friends say he’s had enough. After everything that happened and the hurt she caused, he’s furious she’d be back in touch with him, even if she is saying it’s completely innocent.

“It does look like this time it’s over for good. He simply can’t trust her.”

Getting caught out once was bad enough, but twice is a real stinker. Rob moved everything he owns out of Kristen’s £3million gaff in Los Feliz, LA, on Monday. He even took Bear and Bernie, the dogs they rescued together.