JoJo Siwa and her girlfriend, Kylie Prew have split after less than a year of dating. ET has learned that the contestant and Prew are no longer together, and actually called it quits about two weeks ago.Speculation about the pair started earlier this month when Siwa alluded to going through difficult moments in her professional and personal life in a cryptic Instagram post.«This has been a WEEK,» the alum shared in early October.