(Cover) - EN Showbiz - Amanda Seyfried has parted ways with her boyfriend.

The In Time actress and real estate agent Andrew Joblon put an end to their relationship after dating for four months.

Life & Style reports that the pair have been distanced in recent weeks.

"They're definitely over," a source told the magazine.

"He celebrated New Year's Eve in Aspen and she wasn't there!"

Amanda and Andrew's romance flourished when it began in the summer. By winter the couple seemed to have been growing apart.

"[The split] happened gradually over time," another insider added. "They still talk. They aren't what they were, but they still hang out and are on great terms."

Amanda and Andrew began their relationship a couple months after the star split from actor Ryan Phillippe in early summer of last year.

Before dating Ryan, Amanda had a long-term on and off again romance with her Mamma Mia! co-star Dominic Cooper. (C) Cover Media