Cena proposed to Nikki at WrestleMania 32 after the duo won a mixed tag match against The Miz and Maryse.
The two started dating in 2012 after Cena filed for divorce from his ex-wife, Elizabeth Huberdeau.
"While this decision was a hard one, we continue to have a great deal of love and respect for one another,"Nikki wrote in a statement on her Instagram".
If Nikki Bella and John Cena can't make it, can any couple? "We ask that you just respect our privateness throughout this time in our lives".
Fans immediately flooded the comments to express their sadness and surprise, and many of them speculated as to why the couple would split even after they seemed to be happy together. "And we're gonna move forward and try to work through it". "Love is beautiful, but we've had to come to the realization after being together for five years that love is not easy."We work every day on us". But we work every day on us. "It also made me realize that, and this was very early on in our relationship, that this is one young woman I should not let get out of my life", he said. "I think, for now at least, that is certainly what's making this work".
He continued, "You have two choices".