A lot of facts has been covered by various writers already but I want to add some additional facts on them:
1. After the break-up with Nikki Bella, he is currently dating his new girlfriend Shay Shariatzadeh who is Engineer by profession.
2) He can speak Mandarin Chinese fluently and he proved it when he spoke on this language in a press conference in Shangai in 2016.
3) He once worked as a driver for a Limousine company after graduating from college with a degree in Physiology. How ironic that a man who once destroyed John Bradshaw Layfield’s limousine was once a driver of one.
4) Everyone knows that John Cena made an unusual debut accepting the open challenge of Kurt Angle in 2002, in which he lost. But actually, The Undertaker was set to respond Kurt Angle's challenge, however, Undertaker got the flu due to which Cena was brought up as a last-minute replacement.
5) John Cena was trying to find a job during his struggling days and so he applied to become a Highway Patrol police officer, but unfortunately failed the exam.
Thanks. Hope You Enjoy.