A sneak-peek at Sunday's episode of Total Bellas reveals Bella chose her then-fiance, John Cena's best man for him.

Jumping The Gun In A Big Way

More details emerge about what went wrong between John Cena and Nikki Bella. The latest episode of Total Bellas sheds some light on the situation.

The Dancing with the Stars alum admits that she's told Cena's best friend Rob that he has the job before Cena can do so himself.

"I need to tell John what I've done. I need to tell him ... Okay, now saying it, I kind of feel silly," she says in a confessional.

The 34-year-old Bella then tells 41-year-old Cena that she jumped the gun by telling his buddy he could be a part of their wedding.

Cena isn't exactly pleased to hear it and makes a point of requesting that Bella include him in all wedding-related decisions going forward.

"You took that choice away from me, and you took that meaning of me telling them. ... Let me know if you're making a decision on my behalf - especially one that directly affects me," he explains to her.

The Split Heard 'Round The World

Bella called off their engagement in April, almost a year to the day since Cena proposed at Wrestlemania in front of tens of thousands of fans, and just three weeks before they were due to tie the knot.

According to sources close to the wrestler, her decision was based mainly on Cena treating her as though he was only marrying her out of pity.

The couple also argued about whether or not to have kids, particularly on Total Bellas.

Wedding planning seems to have been a bone of contention also, with this new season of the hit reality show teased as giving fans an insight into how, and why, things fell apart for them.

It Ain't Over 'Til It's Over

The split came as a shock to fans of the famous couple, but both parties have suggested a reconciliation is possible in recent interviews, particularly in the lead up to the season premiere.

Bella told PEOPLE she's hopeful they'll still get married someday, while Cena made a public plea to her during a TV appearance, saying he would still love to marry her.

The two were also spotted out together, with an insider confirming they've rekindled things once again.

Catch Total Bellas every Sunday at 9 p.m. ET on E!