Actress Amanda Seyfried chats about her real life romance with her 'Mama Mia!' costar Dominic Cooper and "pretending to be in love" with 'Dear John' heartthrob Channing Tatum.

"A lot of people ask me, 'Is Dominic the one?' I don't know, and I'm fine with that," Amanda told Teen Vogue magazine. "Too much planning can lead to heartbreak. Love is great and possible, always, but it's very rare to have the feeling that 'I want to be with this person forever.'"

The actress had a successful summer, being the leading lady of the box office success 'Dear John.' "It's fun to play characters who have these ideals that you don't have. Like, in 'Dear John', Channing and I had such a good time because we were pretending to be in love," she tells the magazine.

Amanda currently stars in 'Letters to Juliet' alongside Vanessa Redgrave. The romance movie came in at No. 3 at the weekend box office, grossing $13.75 million.

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