90 Day Fiance couple Steven Frend and Olga Koshimbetova have reunited in Russia!

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One month after Olga's K-1 visa application was approved by the United States, which will allow her to travel to America, Steven has returned to Russia to see his fiancee and their son, Richie, in her native country.

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On Tuesday, Olga, 20, announced Steven, 20, had arrived in Russia and she surprised him at the airport to make for an even sweeter reunion.

"So I told Steven that I can't meet him because I have to go to the doctor but [right now] he has no idea that I'm waiting [for] him at the airport," Olga wrote in an Instagram Story.

Ever since Steven touched down in Russia, he has been sharing Instagram Stories of his precious time with Olga and their baby boy.

In one video, Richie could be seen gazing into the camera with a confused look on his face.

"He's thinking, 'I've only seen you on a phone screen. This is different,'" Steven wrote on social media.

But after posting a couple of videos in which Richie could be seen smiling, laughing and jumping, Steven wrote, "He's cool with me now."

On Sunday, Steven took to Instagram and revealed to fans he was leaving Maryland and flying out of the country.

"For all asking, I am going to russia to be there with her during her interview. I have all of the correct paperwork they need for the interview. Then we come back to USA together!" Steven wrote Sunday night on Instagram. "Bye bye USA."

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Steven also shared a photo from inside his airplane before takeoff at the time.

The couple had learned Olga's K-1 visa was approved on December 24.

Steven met Olga while she was visiting America for the summer, and after only a month-and-a-half of dating, the couple discovered Olga was pregnant. Steven said learning he was going to be a father was "a holy sh-t moment."

Olga returned to Russia about a week after learning she was pregnant, but Steven proposed they get married and have her return to America on a K-1 visa.

Steven told Olga he had applied for her K-1 visa shortly after her return to Russia but the visa application had been delayed, leaving her stuck overseas for the birth of their son, Richie Aleksandr Frend, on April 19.

However, 90 Day Fiance viewers saw Steven eventually admit to Olga on the show's December 23 episode he had been lying and didn't apply for the visa until after traveling to Russia to be with Olga for Richie's birth. 

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Once Steven admitted the truth to Olga on Season 6 of the TLC reality series, she appeared to take the news surprisingly well and quickly forgive him.