Cena and Bella were set to tie the knot on Saturday, May 5, until calling off their engagement three weeks ago.
The exes took to social media during what was supposed to be their wedding weekend.
Cena took to Twitter to wish his fellow pro wrestler-turned-movie star a happy 46th birthday on Wednesday.
The former wrestling foes will be working together on a new thriller, based off of a novel written by the author who also penned the 'Bourne' series.
ET caught up with Cena at CinemaCon in Las Vegas, marking his first interview since breaking up with his former fiancee, Nikki Bella.
The actor tells ET that breaking up with his longtime love 'sucks' while at Cinemacon in Las Vegas to promote the new 'Transformers' spin-off, 'Bumbleebee,' out Dec. 21.
The 'Bumblebee' star got candid with ET about his recent breakup, and admitted he still loves his former fiancée.
The WWE star's way of celebrating his big day isn't for everyone.
ET has learned the main issue that ended their six-year relationship was that Nikki wanted children, while John did not.
A source tells ET that differences between the WWE star and the 'Blockers' actor ultimately led to their breakup.
The WWE stars have different ideas for their future, a source tells ET.
On Sunday, Nikki released a statement about splitting from Cena after six years together.
Fans were heartbroken on Sunday when John Cena and Nikki Bella announced their breakup after six years together.
The couple announced their split via social media on Sunday.
