A woman has gone viral on social media after revealing the moment she found out her then-boyfriend was cheating right before he proposed, according to a report.

Tiffany Maldonado, 42, left TikTok users in shock as she recounted how she made the discovery of her now-ex’s secret mistress through text messages on the phone she was holding as he proposed to her.

Maldonado admitted how “madly in love” and invested she was in her two-year relationship, saying she was “head over heels” for the man, the Daily Mail reported.

One day, Maldonado says he surprised her with a getaway to Orlando and a trip to an amusement park.

“Once we got to the amusement parks, he decided to sign up to be a contestant on one of the competition games performances they had…,” Maldonado said.

“Right before the show’s about to start and he’s about to start to compete, he hands me over his cell phone and says, ‘Babe please film this — I want you to see what’s going to happen.'”

“And I’m just saying, “Oh my gosh, this is so cute. How much fun.”

But when he won the competition, the romantic gesture turned into a nightmare for Maldonado.

As she kept filming, her boyfriend suddenly received a series of curious texts.

“The text messages turn out to be from his mistress that he’s been messing with the whole time we’re together,” she says in the video.

“My heart absolutely drops and like I want to vomit. And I’m sitting here in a crowd, with hundreds of people, maybe even thousands of people, trying to keep my hand steady and filming what’s happening as he’s proposing and announcing it to this whole frickin’ stadium full of people,” she added.

Maldonado said the mistress had apparently texted him out of anger after he broke things off because he was getting engaged that day.

Maldonado remained stunned, but kept holding the phone while nearly having a panic attack in front of thousands of surrounding people.

“My heart absolutely drops and like I want to vomit,” Maldonado says.

And that’s when the boyfriend dropped to one knee to propose in a moment captured on a big screen at the venue.

Maldonado said that instead of making a bigger scene than there already was, she decided to “keep my composure and to just walk outside of the stadium and wait for him outside.”

When the man found the devastated Maldonado outside the venue, he gave her a big hug and told her that he loved her — proposing to her a second time.

“So I quickly grab him and drag him into the nearest restaurant in this theme park that I could find, and I bring him over to the bar area and sit him down and tell him everything that I know,” Maldonado said.

“He knew that he was caught and for the next 30 minutes, he proceeded to just tell me everything that he thought that I wanted to hear and I was just numb.”

“The only words that I can manage to muster up at this point were: “Baby, this two-carat diamond ring. It’s just not going to be enough,” she says.

In another video, Maldonado revealed that she didn’t quite break it off until several months later, but had no choice when she realized he “was never gonna win my trust back.