 Alexander describes himself as a "real left-winger" and said in 2016 that he "had a crush on" Labour Party leader Jeremy Corbyn.From May 2015 Alexander was in a relationship with ex-Clean Bandit member Neil Milan Amin-Smith, but due to scheduling conflicts whilst on tour and recording, they parted amicably at the end of 2015. in 2016 Milan credited Alexander amongst others in his leaving statement posted on Instagram.As of 2018 Alexander remains single.