Tinder, the most popular dating app in the world, has banned teens under the age of 18 but it's not stopping them from signing up. A jilted Australian doctor pleaded guilty Monday to sending 9,000 abusive and threatening messages to her former Tinder date, according to a new report. Radiologist Denise Jane Lee, 40, of Sydney, copped to four of 10 charges against her ahead of a scheduled five-day hearing in the Downing Centre Local Court, the Australian Associated Press reported. Lee, who was arrested in February 2017, copped to three counts of using a carriage service to harass, menace or offend and one count of intimidation, according to the report. Six additional charges were withdrawn.