The split -- first reported by Us Weekly-- comes as a surprise, as engagement rumors were swirling around the couple in March, when the "Womanizer" singer was spotted wearing a diamond ring on her engagement finger while on vacation in Hawaii with Charlie and her two sons Jayden, 8, and Sean, 9.
Britney also told People in March that she's "the happiest [she's] ever been," and that Charlie got along well with Jayden and Sean. "They relate to him really well and they have fun together," she said. "He's refreshing to be around and really lighthearted."
The pair's last public appearance together was at the 2015 Billboard Music Awards last month.
"Let's all agree @britneyspears Is the most beautiful," Charlie gushed on his Instagram.