A source tells E! News that "Chris ended it with her" after the two got into an argument earlier last month.
"She hasn't spoken to him in two weeks. She just needed a break to focus on herself. It's not that they don't care for one another," our insider told us.
"She's taking time to spend with her family and focus on her career. She's just been pursuing that part of her life."
A second source tells us that a third party is not to blame for the on-and-off couple's latest split, saying, "There's never been a case of infidelity."