Stems from the fact that Abhinav has an equation with Jasmin. She doesn't like that fact that Abhinav doesn't allow Rubina's opinions about Jasmin to influence his friendship with Jasmin. Can't blame Abhinav if he likes Jasmin's company because Jasmin treats him like an equal whereas with Rubina it always has to be her way. I think all this makes Rubina insecure too.