Mamma Mia, here we go again.

Amanda Seyfried and Justin Long are reportedly dating, but with their hectic schedules, the pair is “seeing where it goes,” according to “Us Weekly.”

Though it isn’t clear how the couple met, Justin attended the premiere of her film “Lovelace,” where they reportedly stayed together all night.

“Justin came alone and stayed close to Amanda all night,” an insider tells “Us.” “They weren’t making out or anything like that, but they were just inseparable during the event.”

Seyfried, who is busy promoting her new movie, was previously in a long-term relationship with her “Mamma Mia!” co-star Dominic Cooper and seems to be in the market for something a little less serious.

For his part, Long was involved with Drew Barrymore for several years and has been linked to “House of Cards” star Kate Mara. He will next romance Anna Faris on-screen in an arc on her new CBS comedy “Mom.”

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