Posted 0 minutes agoSubscribe to BuzzFeed Daily NewsletterCaret Down9 Celebrities Who Have Dated People Who Look Weirdly Similar To One Of Their Family MembersUncanny.by Leyla MohammedBuzzFeed StaffFacebookPinterestLink 1. This is Ariana Grande's partner, Ethan Slater, next to her brother, Frankie Grande: Michael Buckner / Getty Images, Jeffrey Mayer / Getty Images 2. This is Finneas O'Connell's girlfriend, Claudia Sulewski, next to his sister, Billie Eilish: @claudiasulewski / Via instagram.com, Jerritt Clark / Getty Images 3.