American Grit John Cena tweets about "perseverance" following split from Nikki Bella 04/19/2018 John Cena tweeted about "hardship" and "loss" on Monday following news that the WWE Superstar and Nikki Bella are splitting up after six years together. Read More RELATED NEWS John Cena tweets about "perseverance" following split from Nikki BellaJohn Cena meets with fans he helped inspire in new video'American Grit' ousts Melanie Mahanna after battle against Carla Mireles and love interest Herman Barr TAGS: Nikki Bella John Cena