We’re all fans of Keisha Knight-Pulliam since her days on The Cosby Show, and although she’s kept a pretty low-key profile, she’s now thrown in the spotlight after a brief marriage to NFL star Ed Hartwell, a pregnancy announcement, and now a pending divorce all within the last 8 months. Now a source close to Hartwell tells PEOPLE the former NFL star’s real reason for the paternity test.

[kkgallery kid=”2187″ title=”Keisha K. Pulliam Reportedly Ready To Challenge Hubby Over Paternity Test”]