The 'Young' singer, who famously clashed with departed panelist Kelly Rowland on last year's series, insisted that she "get[s] on fine" with the former Pussycat Doll.
"P**s off media with all ur me n @NicoleScherzy beef talk," she wrote. "Ur always guna try and make a headline cus uve got nothin good 2 write about.
"We get on fine!Just coz we r different doesnt mean we dont like each other!n if we didnt..believe me,Id let u know #hatebulls**t."
Scherzinger was comforted by co-stars Contostavlos, Gary Barlow and Louis Walsh when she broke down in tears during last week's X Factor Boot Camp in Liverpool.
Former X Factor contestant Misha B - who Contostavlos and Walsh accused of bullying on a live show last year - recently told Digital Spy that Scherzinger will "add an extra spice" to the panel.