FASHION photographer Markus Klinko has filed a $100 million defamation lawsuit against a romantic rival who allegedly called him “a lunatic” who’s “on the brinko.” In papers filed in Manhattan Supreme Court, Klinko says he suffered “public ridicule, contempt, scorn [and] disgrace” from the comments Rock & Republic CEO Michael Ball gave to fashion-trade magazine DNR, which also included the statement “If you see this guy’s rap sheet, he’s a scary guy.” Klinko’s lawyer, Anthony LoPresti, told The Post’s Dareh Gregorian that his client was not “on the brinko” and had no rap sheet.