►Two more women and a man are suing Usher for alleging sleeping with them without telling them he had herpes ►On Monday, one of the alleged victims, Quantasia Sharpton, spoke at a press conference in New York City ►The 21-year-old said she had sex with the singer after attending one of his concerts for her 19th birthday ►While she has tested negative for the sexually-transmitted disease, Sharpton is suing because she feels her rights were violated ►Her attorney, Lisa Bloom, says one of the other two clients she's representing has tested positive for herpes and believes they got the disease from Usher ►One of her clients is a man who said he had oral sex with the star with no warning about his STD Source: Dailymail