Missing Maryland woman Robyn Gardner's boyfriend claims the high-powered lawyer who is representing Gary Giordano has threatened him to stop talking, RadarOnline.com can exclusively reveal.

Gary Giordano's lawyer Jose Baez and Richard Forester were embroiled in a bitter standoff on Fox's Geraldo At Large on Sunday, when the defense attorney warned the distraught boyfriend not to do anymore interviews because he was "walking a fine line in terms of a defamation suit."

As RadarOnline.com previously reported, authorities arrested 50-year-old Giordano as he tried to leave Aruba in August, after he reported Gardner, 35, had disappeared while snorkeling August 2. After a series of searches over four months, neither Gardner's body or any related physical evidence was recovered, spurring a judge last week to order Giordano freed.