A man has filed a suit against his mother for allegedly attempting to break him and his wife up. Lia Joseph allegedly went too far in her quest to prove that her son's wife, Diana David, was a gold digger that she got David fired from her job and lied to her sick father. One source told the Post her quest "seems to be some sort of twisted Freudian thing."

Initially Joseph was upset that her son, Denis, didn't force David to sign a prenuptial agreement before the wedding. Believing David was after their property in Greenwich, CT and Flatbush, Brooklyn, she threatened to sue David's family if they went through with the wedding. She allegedly e-mailed David, saying she was "self-centered and truly dangerous" and had no rights to "our family property."

She also called her father, Frank David, who needed heart-bypass surgery, and attempted to get him on her side. Frank David said Joseph told him "that Diana was a gold digger and that she was influencing Denis in a nasty way, none of which is the situation." Joseph also called Diana David's office and asked for references to make it look like David was looking for another job. Joseph was not invited to the wedding last October.

Denis Joseph is the sole owner of the Greenwich and Flatbush properties, but Lia Joseph attempted to claim she was co-owner of the Greenwich property, and allegedly falsely called the renters of the Flatbush property and told them to stop paying rent. She said she wanted to do what she could to make sure her son had no money for his wife to take. Denis Joseph had enough and filed a suit against her, claiming, "Fresh from a 9.5-year divorce case from Denis Joseph's father, Lia Joseph turned her full maniacal rage against her son, his fiancée and [Diana's] family."