It wasn't the sound of a Smack Down that got fans roaring at WrestleMania 33 on Sunday night... but the tinkling of wedding bells.

Pro wrestler John Cena got down on one knee to propose to his longtime girlfriend Nikki Bella in front of thousands.

The moment took place right after Cena and Bella defeated foes The Miz and Maryse, who are a married couple in real life, in a tag team match in the ring.

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Major step: Pro wrestler John Cena got down on one knee to propose to his longtime girlfriend Nikki Bella in front of thousands

Sealed with a kiss: The moment took place right after Cena and Bella defeated The Miz and Maryse in a tag team match in the ring

After winning the Sunday match, Cena launched into an emotional speech.

The powerfully built wrestler began: 'This is what you wanted over a year ago.

Will you? Nikki posted this image with the message 'A dream come true! My Prince Charming has made me his Queen in a place we call home. I'll never, ever forget this moment!'

Moment to treasure: Bella, who has dated Cena since 2012, answered him with a kiss

She said yes! The pair celebrate their engagement in the ring

'You broke your neck and did everything you could to come back because you wanted a WrestleMania moment. I'm so very proud of you.'

'Right before your surgery, there would be a time when you would be a little loopy and I could ask you anything I wanted.

'If you gave me an honest answer, you wouldn't remember what you said. After a year and half, you asked me all the time.

'I promised I would tell you when the time is right. The time is right.'

He said: 'You were kinda glassy, in and out. At the last moment, I said, "Can you hear me?" You said, "Yes." I said, "I only have one question." You said, "What is it?"'

'Do you know one day I'm going to marry you? And you said, "Yes."

Victory: Cena hugs his bride to be after she accepted his proposal

What a whopper: The pro wrestler had picked out the ring

'I just need you to say yes one more time.'

The 39-year-old wrestling star then produced an engagement ring box as he stooped down on one knee.

He said: 'I've been waiting so long to ask you this. Stephanie Nicole Garcia-Colace, will you marry me?'

Bella, who has dated Cena since 2012, answered him with a kiss.

That's a yes! Bella, who has dated Cena sine 2012, answered him with a kiss (seen here in March at the Kids' Choice Awards)

Cena and Bella are pictured together at the Nickelodeon Kids' Choice Awards on March 11

Big news! Bella's twin sister, fellow wrestler Brie Bella, tweeted 'Welcome to the family @JohnCena'

Bella's twin sister and fellow wrestler Brie Bella posted a message about the engagement on Sunday.

Using the twins' Twitter account, she wrote: 'Happy tears!!!! They always felt married to me but to see it...wow!!! Welcome to the family @JohnCena.'

Cena divorced his first wife, Elizabeth Huberdeau, in 2012.

He has previously spoken about being reluctant to get married again or have kids, the Washington Post reported.

Before the tag team match, Maryse had claimed Bella was 'jealous' of her.

In a video WWE posted to Twitter on March 7, Maryse held up her hand, showing her wedding ring.

She said in the clip: 'Nikki Bella is jealous of me because I have this, which she'll never have.'

'That's a hell of a ring,' The Miz chimed in at the time.

Cena and Bella are seen together at the Fox Network 2016 Upfront Presentation in May 2016

Together: Bella and Cena are seen in images posted to Bella's Instagram account

Bella, who stars on the E! reality series Total Divas, was asked on the talk show The Real in October 2016 if Cena would propose.

At the time, she said: 'I mean, I think so. The past year he's actually talked about that he's open to marriage, so of course like my hopes go way through the roof.

'So, he's like "Oh, let's go have this romantic dinner, and I'm like "This is it."

'And I feel every moment I'm waiting for it. It's like, it's been my birthday, it's been an anniversary, holidays.'

Cena told Bella in an episode of Total Divas, a clip of which was posted to YouTube in June 2016: 'Would I love to marry you? Absolutely.

'I love you, and I love you more than I've loved anyone in my entire life.'

'What I'm afraid of - and this is the one thing I am very much afraid of - if we were to get married tomorrow, and then you come to the conclusion that you want children, you know where I stand.'

'In no way would I ask you to sacrifice anything for me,' he said at the time.