A former girlfriend of British rapper Dappy has admitted falsely implying he had assaulted her. The N-Dubz star, real name Costadinos Contostavlos, became embroiled in a bust-up with his ex, Kaye Vassell, on Twitter.com after she posted a picture of herself with a lump on her head. The image was accompanied by the message, "I kept quiet for wayyyyyy (sic) too long to protect you Dappy", sparking rumours the couple had had a violent relationship, but now Vassell has confessed she lied. In a new message on the social networking website, she writes, "We all know Dappy Didn't (sic) really Do (sic) that to my Face (sic)! I was simply angryyyyy (sic) at the pics (sic) he tweeted earlier??? It's defo (definitely) over this time!!!" Contostavlos and Vassell have had an on/off relationship for several years and have two children together - Gino, four, and Milo, two.