While the rest of the world is not sure how reliable that information is, perhaps Cara wanted to find out for herself.
Before Jack, she was in a brief relationship with American actress Michelle Rodriguez but they called it quits in May.
Jack, who is currently winning rave reviews for his performance as a soldier in new drama '71, has gushed about how talented his rumoured new flame Cara is.
“She knocked my socks off with the work that she did on that set,” he revealed.
The 26-year-old former X Factor judge has since been hanging out with her ex-boyfriend Fazer – fellow N-Dubz member – making sweet… She also appeared back on our screens last weekend helping out Louis Walsh as he picked his acts for the groups category on ITV show The X Factor.