"He wasn't feeling her anymore," a source told the magazine.
"[Murgatroyd] didn't want it to end," another source told Us.
Murgatroyd's representative reportedly did not respond to a request for comment, while Chmerkovskiy's representative had no comment.
Murgatroyd, 26, and Chmerkovskiy, 33, took their relationship public last May shortly after she and celebrity partner Donald Driver were crowned Dancing with the Stars' fourteenth-season champions.
Neither Murgatroyd or Chmerkovskiy were part of this week's announcement of Dancing with the Stars' sixteenth-season cast. However, Murgatroyd is rumored to be competing with The Bachelor star Sean Lowe -- who is believed to be the twelfth and final "mystery" celebrity participant ABC has not announced yet.
Dancing with the Stars' sixteenth season will premiere Monday, March 18 at 8PM ET/PT on ABC -- one week after the finale of Lowe's currently-airing The Bachelor edition airs in the same time period on March 11.
(Photo credit ABC)
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