"They've been spending time together," a source toldUs Weekly of the exes, who have been split up for about two years. "I wouldn't say they're back together. But they're definitely spending time together."
According to sources, Chmerkovskiy and Murgatroyd have been reigniting their old flame in recent months. They were photographed walking arm in arm earlier this week in New York City.
The pair dated for nearly 10 months from May 2012 to early 2013. They reportedly split a couple weeks before Valentine's Day of that year.
"He wasn't feeling her anymore," an insider told the magazine in February 2013.
"[Peta] didn't want it to end," added another insider.
Murgatroyd, 28, was apparently "wary at first" to let Chmerkovskiy, 35, back into her life because they "fought so much and ended on such a bad note last time."
"But he has been working hard to really be a good guy to her and show her that he's changed," a third source explained.