"They were in very different places," the source said. "They are still on friendly terms. There are no hard feelings."
The story comes on the heels of a story by Radar Online, who first reported the couple had called it quits.
In fact, Radar spotted Hayden out at Crown Bar in Hollywood last week—and she wasn't alone. The online mag reported the "Heroes" hottie hooking up with singer Jesse McCartney, 21.
"[Hayden] was sitting on Jesse's lap while he kissed her neck. Then she got up and did some crazy sexy dance in his lap," Radar reported.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: Milo Ventimiglia
PLAY IT NOW: 2009 NYC Comic Con: Milo Ventimiglia Talks 'Heroes'
PLAY IT NOW: Dish Of Salt: 'Heroes' Set Visit, Episode 13