Former Commander of International Security Assistance Force and U.S. Forces-Afghanistan Gen. Davis Petraeus, stands with his wife Holly, while participating in an armed forces farewell tribute and retirement ceremony Aug. 31, 2011, at Joint Base Myer-Henderson Hall in Arlington, Va. Gen.

WASHINGTON - A former spokesman for ex-CIA Director David Petraeus says Petraeus is "truly remorseful" about an affair that led to his resignation Friday.

Steve Boylan, the retired general's former spokesman, spoke to Petraeus on Saturday.

Boylan says Petraeus "knows he screwed up," and is going to try to heal with his family.

An FBI investigation into harassing emails allegedly sent by Petraeus biographer Paula Broadwell led to revelations that Petraeus and Broadwell were having an affair. Both are married.

President Barack Obama accepted Petraeus's resignation on Friday.