“Bachelorette” Alum Romeo Alexander Is Engaged: All the Details From the Proposal in Central Park! (Exclusive)

'Bachelorette' alum Romeo Alexander and fiancée Caroline Sullivan exclusively spoke to PEOPLE about their engagement and plans for a "big" wedding next year

<p><a href="https://www.instagram.com/avivamedia/">Sarah Heilbronner </a></p> Romeo Alexander and Caroline Sullivan in Central Park, New York, NY.

Sarah Heilbronner

Romeo Alexander and Caroline Sullivan in Central Park, New York, NY.

Bachelor in Paradise alum Romeo Alexander is engaged!

In an exclusive interview with PEOPLE, Alexander and his fiancée Caroline Sullivan revealed all the sweet details of the proposal, which went down on Dec. 27 in New York City.

“I was completely shocked!" says Sullivan. "Romeo told me we were going to dinner at a nice restaurant near Central park, and that I had to wear something fancy. My sister was in town and leaving that day, so he suggested we show her around the park before dinner.  When we got to the location, this amazing photographer (Sarah) was pretending to do a photo shoot and generously asked us if we wanted a picture! That is when he dropped down on one knee. It was perfect.”

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In pictures shared on Instagram in December, Sullivan is overwhelmed with emotion as Alexander knelt down on one knee. A second black and white snap featured Sullivan covering her mouth in shock as Alexander opened the ring box.

“I was sure that Caroline had already figured everything out, but I knew I had to continue doing what I could to confuse her in order to keep an element of surprise," Alexander tells PEOPLE.

“I took Caroline to 5th Avenue as she had never seen it during the holidays, and I think it's when New York is at its prettiest,” he adds. “I took her into some stores to get a sense of her style and ring size, but I eventually bought it from a friend in the diamond district (shout out to David at Doppelt Diamonds!).”

Adds Sullivan: "I’ve always loved emerald cut rings! Romeo knew that because my sister was secretly helping him. One night we made a spontaneous stop at Tiffany’s just to be festive, and that’s how he got my ring size."

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Alexander and Sullivan first met at Dumbo House in Brooklyn in February 2022. “I was just walking in as he was leaving,” Sullivan tells PEOPLE. “We chatted for a few minutes at the coat check, but never exchanged information.”

Alexander tells PEOPLE that he had been looking to grab a quick dinner but the Soho House property was “too crowded” so he asked Sullivan if she knew anywhere else close by that he could get a bite to eat.

“I actually ended up leaving, but I turned around as I was halfway down the block and went back to talk to her more,” he explains.

Sullivan revealed that after meeting Alexander, she had a feeling he was "the one." That same night she texted her girlfriends, “I just met husband.”

He came back 15 minutes later and the pair “danced all night” before Sullivan traveled to England the following day. Two weeks later they went out on their first official date.

“We had drinks at a cute spot called Gair,” Sullivan recalls. "We decided to continue the night and look for dinner, where we shared a steak. We didn’t want the night to end, so we went to another sports bar nearby and talked for 3 more hours!

A few weeks later the pair "randomly ran into each other at a techno concert" and their connection kicked into high gear.

"I love how loyal Romeo is, and how much he values family and his close friends," says Sullivan. "He’s sensitive and has the biggest heart. He’s also the smartest person I know, and the most fun dance partner!"

As for wedding plans, the couple is slowly starting to dive in.

"We have started thinking about a Paris wedding in early 2025, and are looking for a wedding planner," says Sullivan. "We have so many beautiful memories together in France, with his family. Romeo is half French so it just feels right to have our wedding there! I haven’t even begun to think about details yet, but I know it will be a big wedding!"

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