John Cena and Nikki Bella have called it quits ... calling off their engagement and breaking up.
The former couple said, "While this decision was a difficult one, we continue to have a great deal of love and respect for one another," adding, "We ask that you respect our privacy during this time in our lives."
The 40-year-old Cena proposed to 34-year-old Nikki almost a year ago to the day at Wrestlemania 32.
Earlier Sunday Cena tweeted out a quote from Walt Whitman .