Colton Underwood fought hard for Cassie Randolph on The Bachelor, ultimately winning her love on Tuesday's finale
Both looked happy as could be, surprising the crowd after the show by taking the stage at the St. James Theatre to speak with actress Patti Murin, who plays Anna.
Underwood, 27, wore jeans, a white t-shirt and a black jacket, while Randolph, 23, was dressed in an oversize plaid blazer dress and white boots.
Making the night even more special, Randolph was gifted a bouquet of roses from the cast.
“I never realized the parallels between Frozen and the Bachelor,” Underwood joked to Murin in a video from their night out.
Randolph agreed, telling Murin backstage that one of Anna’s lines — “You can’t marry a man you just met” — resonated with her reality TV experiences, according to a source on the scene. She also revealed that Frozen was her first Broadway show.
Murin, a self-described Bachelor superfan and prominent live-tweeter of the ABC reality romance series, had surprised Underwood and Randolph with a video message on Wednesday’s Good Morning America — where Underwood and Randolph first announced they’d be going to Frozen.
“Congratulations on getting to the end of what was obviously an epic journey,” Murin, 38, said. “I’m so excited for you guys and so happy for you. Cassie, I cannot wait to meet you and I’m just sending you all the love in the world.”
“Thank you so much for coming,” she said on Thursday. “We’re so happy for you.”
Also joining Underwood and Randolph at the show was Murin’s husband, Chicago Med star Colin Donnell, who joined all backstage in Murin’s dressing room.
Prior to the show, Underwood and Randolph went out to dinner at Lower East Side hotspot Vandal.
According to an onlooker, the two were seen canoodling in a booth while enjoying cocktails and signature menu items — including the cauliflower tacos and french onion soup dumplings — and talking about heading to Las Vegas this weekend to see their families.
For more on Cassie and Colton, pick up this week’s issue of PEOPLE, on stands Friday
It was a long road for Underwood and Randolph to romance. At first, it looked like the two weren’t going to end up together when Randolph left after refusing to commit to a proposal from Underwood. But Underwood fought hard to win her back, even sending home the final two women. Ultimately the two left the show as a couple after reuniting in Portugal.
Randolph also opened up about her change of heart to PEOPLE in this week’s cover story. “I thought I made the right decision in leaving,” she said. “But Colton fought for me. And he has shown me what a healthy relationship looks like.”
She went on to reveal that she based her initial decision to leave the show on her fears of not giving Underwood what she thought he wanted. “Colton was so good at articulating how he was feeling about me and I was trying to get there,” she explained. “But it got to a point when there was three of us left, and an engagement in two weeks, and I still hadn’t told him I loved him. I didn’t want to take away the possibility [of a proposal] for him.”
Devastated, she nonetheless chose to leave — though a sense of relief about making the right choice never came. “The next day, I was a mess,” Randolph admitted. “I was just heartbroken. I thought I had made the right decision. But I was really sad.”
“I was so happy to see him,” she said. “And when he told me what happened, I was a little shocked. But it felt really nice that he was fighting for [us] and that he understood where I was coming from and was okay with it. He knew I needed more time.”
From that moment on, “Colton never put pressure on me,” Randolph said. “I think that’s why we’re still here today, because we took it at our own pace. We didn’t want to rush something that was going to be forever.”
For his part, Underwood doesn’t harbor any hard feelings about Randolph initially walking away.
“Resentment would be the last thing I feel for Cassie,” he told PEOPLE. “I have so much love and respect for her, and I have no doubts about how she feels about me now. Our story might not be like anyone else’s on The Bachelor. But I wouldn’t change anything about it.”