Travis Barker and Shanna Moakler Split After Fight, Police Call

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Travis Barker and Shanna Moakler's long, strange relationship has gone into "off-again" mode.

Us Magazine reports that Blink-182 drummer Barker and his ex-wife, who reconciled after Barker's near-fatal plane crash last September, have split up following a messy argument Tuesday that resulted in a visit from the police.

A source tells the magazine that the two split up "after a nasty fight broke out at his house last night and cops were called...[when] Shanna started freaking out and acting irrational."

The argument apparently started over Barker's allegations of infidelity on Moakler's part. Shanna had been spotted cozying up to 300 star Gerard Butler at his Korean barbecue joint Shin.

"Travis confronted Shanna about her having an affair with Gerard Butler while he was in the hospital recovering," the source adds.

A rep for Moakler confirms the split, but denies the charges of infidelity on his client's part. "They did break up but Shanna never cheated on Travis while he was in the hospital," the rep says. "Furthermore, Shanna is tired of playing out their personal relationship in the press."

Moakler herself has weighed in on the break-up on her celebrity MySpace page, not only proclaiming her innocence but suggesting that Barker's heart may have strayed. "After arriving in LA and getting settled in the new hospital, I came across numerous romantic emails with MANY other woman [sic], some famous, some I personally knew, all heart breaking," Moakler writes, "and the woman [sic] involved you know who you are and should be ashamed of yourself [sic]."

She also lashes out at the media for reporting the various ups and downs in her relationship with Barker. "The sad part is, the truth really isn't that juicy or news worthy, it's sad and I wish it had been left behind closed doors," Moakler writes. "I am a human being and the bashing has taken it's [sic] toll."

Just last week, the seemingly happy couple were seen out celebrating Moakler's 34th birthday at various Los Angeles hot spots.