With their first baby on the way, Robert Pattinson, 37, and Suki Waterhouse, 31, are also reportedly engaged. Yep, Suki was spotted wearing a *huge* diamond ring on a very specific finger!

On December 18, the parents-to-be were photographed strolling the streets of London and the Daisy Jones & the Six star's ring finger was occupied by a gorgeous diamond, per TMZ.

Details behind the couple's relationship have been pretty hush hush. But singer and model, Suki and actor, Robert are no stranger to high-profile relationships. He dated Kristen Stewart, his Twilight co-star, and was previously engaged to FKA Twigs but called it off in 2017. Suki had a lengthy relationship with Bradley Cooper and dated James Marsden.

They've been together for quite some time now, and it's clear the couple have a ton to look forward to: a baby, possibly a wedding, and the rest of their lives together.

But when did their love story start? Below, everything to know about Suki and Robert's relationship.

July 2018: Robert and Suki spotted hanging out in London

The model and actor were spotted together on a date at a movie theater in Notting Hill, London. The two watched Mamma Mia! Here We Go Again before heading to SoHo House for some drinks, per E! News.

The pair were spotted kissing on their walk home, according to pics E! obtained.

January 2019: Suki celebrates her 27th Birthday with Robert

The couple started 2019 on a pretty good note. They celebrated Suki's birthday together in London along with celebs like Liv Tyler, Georgia May Jagger, Cara Delevingne and Ashley Benson, according to Elle.

A few weeks later, Suki and Robert were seen holding hands during another outing in London, per People.

April 2019: Robert talks about Suki in an interview for the first time (sort of)

Robert opened up about Suki publicly for the first time during an interview with The Sunday Times. When asked if he was still on good terms with Kristen and FKA Twigs, he replied "yes, yes," before adding that his time with the stars were "pretty long relationships, not like three months," according to People.

He was then asked about his current relationship with Suki, he responded, "Do I have to?"

The actor is known to be pretty quiet about his relationships. “If you let people in, it devalues what love is," he told the Times. "If a stranger on the street asked you about your relationship, you’d think it extremely rude. If you put up a wall it ends better,”

He continued, "I can’t understand how someone can walk down the street holding hands, and it’s the same as when I do it and a hundred people are taking your photo. The line between when you’re performing and when you’re not will eventually get washed away and you’ll go completely mad.”

June 2019: They go on a double date with Taylor Swift and Joe Alwyn

Suki and Robert went on a double date with fellow celeb couple, Taylor Swift and Joe Alwyn. They dined at San Vicente Bungalows in Hollywood, per US Weekly.

September 2019: Robert and Suki appear in cuddly Instagram post

On September 4, 2019, photographer Sofia Malamute kinda made Robert and Suki's relationship IG offical. The sweet picture is of Suki sitting on Robert's lap with her arms wrapped around him as she smiles.

"Ibiza, 2019," Sofia wrote in the caption.

instagramView full post on Instagram

How cute are they???

January 2020: Suki and Robert spark engagement rumors in Paris

dior perfume dinner as part of paris fashion week in paris
Bertrand Rindoff Petroff//Getty Images

The couple attended a Dior dinner party together in Paris. Suki and Rob looked elegant as they sipped on cocktails and chatted with other party-goers. But Suki wore a ring on *that* finger, which stirred up engagement rumors, per Daily Mail UK.

May 2020: They confirmed they live together in London

In an interview for GQ's June Cover, during his time filming Batman, Robert Robert pretty much confirmed that he was living with Suki in an apartment provided by the production crew.

September 2020: Rob and Suki show major PDA in London

The lovebirds packed on the PDA in London in September, 2020. Rob and Suki were seen kissing on a park bench with coffees in hand. At this point, production for Batman was shut down due to a positive COVID-19 case, per People.

November 2020: The couple visits Robert's parents house

In November 2020, Rob and Suki were spotted on a walk around London with his parents. This was around the time when their potential engagement fueled the rumor mill, per Daily Mail UK.

April 2021: Suki posts a picture with Robert in the background

On April 15 2021, Suki posted an adorable picture of herself to her Instagram page. While she looks looks stunning, it's hard not to notice the framed photo on a bookshelf behind her. It looks like a picture of Suki giving her BF a kiss on the cheek.

July 2021: Suki calls out the Gossip Girl reboot for joke about her relationship

In the third episode of the HBO Max Gossip Girl reboot, the characters made a joke about Suki and Rob's relationship. It's safe to say she wasn't too happy about it. The joke was in relation to two characters needing to improve their influencer game. Luna (Zión Moreno) says to Zoya (Whitney Peak) "When are you going to get it? As far as the press is concerned, he’s R-Patz and you’re Suki Nobody.”

Suki shared her (now deleted) thoughts on X (formally known as Twitter), and tagged the show and write Lila Feinberg. She wrote, "Another day to be reminded that women can also be the patriarchy. Seeing critiques of patriarchy and sexism, then I get name-checked as somebody’s ‘nobody’ girlfriend,” per Glamour.

February 2022: Robert brings up Suki in ‘Jimmy Kimmel Live’ interview

On an appearance on Jimmy Kimmel Live, Robert revealed how Suki reacted when they watched Batman for the first time together. When looking back at her reaction, he said it “kind of changed the entire thing, per People.

The actor added, “I'm pretty sure she's not normally into watching superhero movies," and shared, “And just seeing that it was capturing her attention the entire time, and then she held my hand and touched it to her face and I could feel a little tear. And I was like, 'No way!'"

May 2022: They celebrate his birthday with a star-studded party

Rob celebrated his birthday with his girlfriend at a little celebration with tons of stars in attendance.

Photographer Mules Hendrik posted a super cute pic of the two who were embracing in a hug. Other pictures in the post included a layered birthday cake, and pictures of those who celebrated with him (oh hey, Donald Glover, Zoë Kravitz, and Tessa Thompson)

The caption read, “Friday I’m in love__”

December 2022: The couple makes their red carpet debut in Egypt

dior fall 2023 menswear collection photocall
Stephane Cardinale - Corbis//Getty Images

Robert and Suki made their long-awaited red carpet debut in Giza, Egypt, per People. They attended the Dior Men Fall 2023 show, and looked absolutely stunning. Did someone say power couple?

Suki wore a gorgeous floor-length dress in a deep mauve color with black pointed heels. Rob wore a very sophisticated silver suite with turtleneck.

She shared a glimpse of her flawless makeup and dress to her IG page with the caption:

"Will never forgot this show, under the stars and in front of the Pyramids of Giza, one of the Seven Wonders of the World. Congratulations and thank you @mrkimjones@dior ✨❤️."

December 2022: Suki and Robert host New Year's Eve part in NYC

The couple put on their hosting hats to ring in the new year at the Moxy Hotel in NYC with guests like Emma Stone, Whitney Peak, and Mischa Barton, per People.

February 2023: Suki shares that she's "shocked" that she's been happy with Robert for five years

Suki opened up about her relationship with Robert with The Sunday Times. "I'm shocked that I'm so happy with someone for nearly five years," she shared.

She explained that the two never go too long without seeing each other, "I had two days off the other day, and it was like, no question I'm going back to see him."

Suki also said every time she sees his name on her phone, she still gets "incredibly excited." She continued, "I think he feels the same about me." She shared that they never run out of things to talk about and that she finds him "hilarious."

February 2023: Robert and Suki buy a Hollywood Hills home

The couple took their relationship a step further by purchasing a single-family house in Hollywood Hills for $5.3 million from Marissa Ribisi, the ex-wife of Beck, according to Traded.

May 2023: The couple take on the Met Gala

Suki and Rob took the Met Gala steps by storm for the first time as a couple.

Rob wore a handsome Dior suit which he gave a glimpse of in these pictures he shared of the two as they pose on the Met Gala steps to his Instagram.

"Met Gala 📸," he wrote.

Suki wore a stunning 2019 Fendi gown by Karl Lagerfeld, per her IG post. She shared this series of pics that show off her incredible dress.

"Karl Lagerfeld: A Line of Beauty
@fendi Women’s Spring/Summer 2019 gown by Karl Lagerfeld ❤️," she wrote in the caption.

November 2023: Suki reveals she's pregnant

Suki was performing on stage at the Corona Capital Festival in Mexico City, and announced to the crowd that she was pregnant.

In true popstar fashion, the singer was wearing a shiny pink minidress, fringe-trimmed boots, tights with all the glitter, and a feathery coat.

A fan posted the video of Suki sharing the big news on X with the caption "Suki Waterhouse announcing that she’s pregnant today at Corona Festival!"

As the wind blew her hair and coat filled with feathers she said, "I'm extra sparkly today because I thought it might distract you from something else that's going on," while pointing at her baby bump. "I'm not sure if it's working."

December 2023: Suki and Rob spark engagement rumors once again

On December 18, the parents-to-be were photographed strolling the streets of London with coffees in hand, a baby bump on display, and a gorgeous diamond rock on Suki's ring finger, per TMZ.

December 2023: Their engagement is confirmed

go campaign's annual go gala red carpet
Variety//Getty Images

Five days after Suki was spotted wearing an engagement ring, a source confirmed to People that the couple are in fact engaged and planning on tying the knot

While Robert and Suki have yet to announce the news themselves, it's hard not to be happy for the new couple!