Well because he told them he was single. He even said that to the producers during last night show but clearly he was lying. Steph his girlfriend(from Matty Js season) was lined up to come in too but they dropped her from the cast after all of this drama. Obviously they were desperate to be on TV and wanted to make out like they had formed some big love story on the show. Going by Brett’s instagram the two are definitely a couple, however he claims he was edited to look like the bad guy when it was just a casual relationship and that he joined the show on the assumption that Steph was joining from the beginning with him. Regardless he deserved to go and she deserved to be kicked from the cast.
Second ep was even better than the first. Keira did a post saying it gets really good from ep 3.