Is Ashlee Simpson Dating Someone New?

By Marisa Laudadio

03/10/2011 at 03:15 PM EST

Is newly single Ashlee Simpson already moving on?

A month after filing for divorce from rocker Pete Wentz, Simpson was photographed at an L.A. mall with another musician, Craig Owens of the band D.R.U.G.S.

But a source close to the singer/actress says reports of a budding romance with Owens, 26, – who is signed to Wentz's Decaydance Records – are just not true.

"Craig is a longtime friend and was comforting Ashlee during this difficult time," the Simpson source tells PEOPLE. "She's not moving on. There's no race for a new relationship. They're friends."

PHOTOS: Ashlee Simpson & Pete Wentz: The Way They Were

Recent reports that Simpson, 26, and Wentz, 31, are gearing up for a custody battle are also untrue, according to the source. "Ashlee and Pete's split is amicable and they're working together to make this as positive a situation for [2-year-old son] Bronx as possible."

"Right now her attention is on Bronx and some new work projects she has coming up. That's it."

So what does Wentz think of all this?

Says a source close to the rocker: "The only thing on Pete's mind right now is spending as much time with Bronx as he can before goes out on the road next week."

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