Confront her about it, sometimes ur close friends could be jealous of the relationship u have with her so jus confront the girl and see wats going on because ur other friends could be lying and jealous of u and her relationship and after u do tha then grab ur best friend and u 2 go to ur close friends and confront them there infront of ur best friend to solve the problem and if ur best friend did say it then she's not ur best friend just dont be friends wid
her anymore if she did say it
olihugo