Love Affairs & Steamy Makeouts! Most Scandalous Secret Romances & Hookups Of 2019 Exposed

For some celebrities, ringing in the New Year could come with an actual ring! Over the past 12 months, love has blossomed for many of Hollywood’s hottest, even when they least expect it, and RadarOnline.com has a refresher on all the surprising and unexpected new couples of 2019.

Including one of the most recent love stories to find a happy ending – the stunning engagement of Emma Stone and Dave McCary!

As RadarOnline.com revealed, the La La Land star said “yes” to Saturday Night Live writer, with the 34-year-old hunk announcing the happy news on Instagram Wednesday, December 4, by sharing a sweet photo of him and Stone, 31. In it, the two are smiling from ear to ear while showing off Stone’s new ring — which seems to be a pearl rather than a diamond.

While rarely photographed, they recently made their red carpet debut as a couple at this year’s Screen Actors Guild Awards. They also attended the Oscars and a Golden Globes after-party, and were caught looking cozy at a Los Angeles Clippers game.

Prior to meeting McCary, Stone dated fellow actor Andrew Garfield. She was also briefly linked to Justin Theroux when she was caught on a beach vacation with him following his split from Jennifer Aniston. But none of those relationships lasted. Now, however, it appears the Crazy. Stupid. Love. actress has found her forever mate.

Stone and McCary are just the latest to solidify their love. Check out other hidden hookups of the past year in this RadarOnline.com gallery.

While younger brother Nick ended 2018 with a series of glamorous nuptials to Priyanka Chopra, on the other end of the spectrum was the decidedly more subdued surprise wedding of Joe Jonas and Sophie Turner. The stars tied the knot  Thursday, May 1 in Las Vegas, after the Billboard Music Awards.

RadarOnline.com learned the Game of Thrones actress and the pop singer applied for a marriage license earlier in the day in Clark County, Nevada and ran off to their ceremony following the show, which, like every good Vegas wedding, was officiated by an Elvis Presley impersonator.

At the BMAs, Joe, 29, jumped onstage with The Jonas Brothers rocking their first awards show performance in 10 years!

Over the Summer, rumors began swirling that Shawn Mendes and Camila Cabello might be more than just collaborators.  While Mendes initially denied them, they basically confirmed them with a steamy makeout session in Miami in late July.

Country singer Miranda Lambert surprised everyone when she announced in February that she secretly tied the knot with Brendan McLoughlin.

"In honor of Valentine's Day I wanted to share some news. I met the love of my life. And we got hitched!" Lambert wrote in her Instagram caption. "My heart is full. Thank you Brendan Mcloughlin for loving me for . . . me."

Dua Lipa and Anwar Hadid first ignited dating rumors over the summer, after each had become coincidentally single. They made their official red carpet debut as an item at the American Music Awards in November, erasing any doubt about their relationship by sharing a steamy makeout for the cameras.

Demi Lovato introduced the world to her sexy new man in a steamy Instagram post  on November 12. The “Tell Me You Love Me” singer shared a selfie wrapped in the arms of model Austin Wilson.

“My ❤️” Lovato wrote in the caption.

American Horror Story star Emma Roberts and Friday Night Lights alum Garrett Hedlund are taking their new relationship deliberately slow, after each ended long-term loves in 2019. Roberts and on-and-off boyfriend of seven years Evan Peters called off their engagement for the second, and seemingly final time, while Hedlund was in a relationship with Kirsten Dunst for four years before they split in 2016.

Baywatch star Zac Efron made quite a splash when it was revealed he was dating Olympian Sarah Bro. The two were first spotted together at a fitness class in Los Angeles in January and continued to fuel speculation after sitting beside each other during the a March UFC fight in Las Vegas.

Following his split from WWE Diva and fellow wrestler Nikki Bella, John Cena began dating a woman named Shay Shariatzadeh in late March. In November, the lovebirds made their red carpet debut for his new movie, Playing with Fire.

Meanwhile, Nikki moved on with her former Dancing With the Stars partner Artem Chigvintsev  in January. The two have been going strong ever since.