Getty 'dumped Miller over party lifestyle'

Balthazar Getty ended his relationship with Sienna Miller after becoming concerned about her hard partying lifestyle, reports claim.

The actor was said to be worried about missing out on seeing his children grow up and called off the couple's romance earlier this month.

"Sienna is only 26 and loves to go out. But Balt is a former drug and alcohol addict who is now teetotal," a source told Star magazine.

"At first he was excited by her beauty but eventually realised he should be back with his wife, and that Sienna represented a phase from another point in his life."

The source added: "The next day he called Sienna and nervously told her: "I have to end it, babe.""

The pair began dating in June after meeting while Miller was filming GI Joe.

The actress confirmed that they had parted ways last week, saying she was "cool with being on my own."