It was fun while it lasted!

After seven months together, Amanda Seyfried and Ryan Phillippe have pulled the plug on their relationship, a source tells Us Weekly.

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"It was mutual," the source says. "They were never fully committed."

After meeting at Kate Hudson's Halloween party last October, the pair first called it quits in February.

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"They were always on and off," adds the source. "They were always seeing other people." Still, when reports surfaced in March that Phillippe, 36, was father of his ex-girlfriend Alexis Knapp's baby, due this month, Seyfried, 25, stuck by him.

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But it's anything but acrimonious post-split, says the pal. "There's no bad blood. They're cool."

Phillippe's past loves include ex-wife (and mother to his kids Ava and Deacon) Reese Witherspoon and actress Abbie Cornish. Red Riding Hood star Seyfried split with British beau Dominic Cooper about a year ago, following a three-year relationship.

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