There's no future for Ciara and her cheating fiance-baby daddy.

The songstress has called off her engagement to rapper Future just three months after giving birth to their son, Us Weekly reported on Tuesday.

"He cheated on her. Game over," a source told the magazine.

"She's devastated," dished another insider. "Ciara's focus now is the baby."

Ciara, 28, "fully intends" to get custody, according to

The pair welcomed little Future Zahir Wilburn in May, about seven months after announcing their engagement. They started dating in early 2013.