The `X Factor` judge employs best friend and personal assistant Gareth Varey to vet potential lovers to make sure she doesn`t run into any romantic difficulties following her recent allegation that ex-boyfriend Justin Edwards, aka MC Ultra, leaked an explicit video of her onto the internet. She said: "Gareth doesn`t leave my side, he even supervises dates. If I started seeing a guy Gareth would be on the first four dates, we come as a package. "He doesn`t necessarily always get involved, he`s just always there." The 23-year-old singer has accused Justin of "violating" her and trying to "ruin" her career, and she has insisted she will never fall victim to a similar incident in the future. She added to BBC Radio 1 DJ Chris Moyles: "I know for a fact this will never happen again." The brunette beauty is now dating former `Skins` actor Jack O`Connell and the pair have vowed never to discuss their relationship, while the N-Dubz singer has even considered getting potential lovers to sign a "boyfriend contract". The deal would insist the pair will never sell a story, tweet or talk about their time together.