"Went to Paris for croissants, came back with carats," the blonde travel nurse captioned her post, which showed off her big diamond engagement ring.
In the pictures, Erik and Logen were posing at a coffee shop and in the streets of Paris wearing dressy black attire with the Eiffel Tower in the background.
"I love you!" Erik commented. "I'm glad you loved the ring and I'm honored to call you mine. That's a trip we will never forget."
Last weekend, Erik also uploaded a video on Instagram titled, "How I asked my girlfriend to marry me -- in Paris," and he set the sweet montage of the couple's romantic Paris moments to "Dandelions" by Ruth B.
Erik wrote, "When you know you just know. I've known for a long time and was waiting for the perfect time to give her the ring she deserves after having it for almost 3 months in my possession. It was tough not to do it sooner though haha!"
Before the Married at First Sight alum proposed marriage, he and Logen ate at a "wonderful restaurant near the Eiffel Tower" called Les Ombres.
"I told her I wanted to do some night photos together near a famous bridge called Pont Alexandre III so that I had a reason to have a camera on us to capture the moment," Erik continued in his caption.
"I gave her a note to read and said that it was directions on how to see different monuments from where we were standing. But in reality, it was just a personal message to her which ended by telling her to turn around!"
Erik then got down on one knee and presented his girlfriend with an engagement ring.
"The next day I arranged a local photographer to take some professional engagement photos so that we would always have that remember our time in Paris," Erik shared.
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Erik's posting appears to be a reference to the engagement photo shoot pictures Logen posted on March 16, however according to Logen's posting those photos were taken by a Lake family member who lives in Atlanta.
"I can't wait I spend the rest of our lives together! I love you more than any words I could ever write down!" Erik ended his post.
Logen replied to Erik's post, "The timing and proposal couldn't have been more perfect Love. You're the most thoughtful person I've ever met. Thank you for always making me feel so special and loved. You're everything I've ever prayed for and so much more. I love you too. Always."
Around the same time Erik posted his engagement announcement, Logen posted a video on Instagram showing more photos from the couple's engagement photo shoot. Logen also posted a montage of photos of her left hand, one of which showed an engagement ring on her left ring finger.
"I've always been a Lake girl, it's about time I made it my last name," she wrote.
Erik commented, "I'm honored that you would take my name. You're definitely a Lake girl forever. I love you!!"
"It's a crazy thing when you stop trying so hard to find your person and just let things play out the way they are supposed to," Erik shared at the time of Logen.
"The past is the past and I can't sit here and regret every little thing that happened before because all of it led me right where I'm supposed to be now. I'm the happiest I've ever been."
And Logen also posted a heartfelt message of her own on Instagram when officially revealing her new relationship.
"I knew I was in big trouble the day I caught a glimpse of those big green eyes and that irresistible smile of yours. What I didn't realize was, I'd be meeting the man of my dreams that day," Logen gushed to her followers.
She added, "You've brought so much joy and light into my life since we met... For the first time in my life, I genuinely feel safe. Now I understand what people mean when they say, 'When you know, you know.' I know you're my person. I know I'm the luckiest girl in the world."
Prior to going Instagram official with Erik, Logen hinted she was in a relationship with him by writing on August 17, 2022 she had met "a hot, single pilot."
Logen also captioned a video on August 12, "When you show your friend a pic of the guy you're talking to, but she says she calls dibs if we don't work out."
Back in July 2021, Erik and Virginia had led fans to believe they may possibly reconcile and get back together despite their divorce filing one month earlier, but that clearly hasn't happened.
Given news of Erik and Virginia's divorce first broke in June 2021, a contract with Lifetime would explain why Virginia and Erik had waited another month to publicly confirm their split.
"This entire process has been difficult as is without the constant chatter of public opinion. Contrary to popular belief, we've been together and trying to make our marriage work since Decision Day," the pair told E! News in a statement at the time.
"While we have decided to get a divorce, we aren't closing the doors on a possible future together. We love each other and will continue to navigate our new reality post show."
Virginia also lashed out at fans on Instagram at the time saying she and Erik would "never fake" their relationship for a reality show and social media had been very "toxic" to their marriage.
That summer, Erik and Virginia's Married at First Sight co-star Chris Williams alleged on his Instagram Stories that Virginia, who had a reputation for being a party girl and drinking often during her MAFS season, was a bad influence on her then-husband because Erik had received a DUI and completed a court-mandated rehab for 45 days.
Chris also alleged Virginia had traveled to Mexico while Erik was in rehab and attempted to have a threesome with her MAFS co-star Haley Harris' brother and his spouse.
Although the couple's divorce documents state Virginia and Erik had separated on April 29, 2021, Virginia denied breakup speculation in May 2021, telling a fan in the comments section of one of her Instagram photos, "I am not single!"
The photo showed Virginia debuting a new black hair color, and Erik fed into the couple's alleged narrative by writing on the post, "Beautiful as always... I have a thing for dark haired women," along with a fire emoji.
Speculation Virginia and Erik had broken up at the time swirled because Virginia was accused of flirting with another guy at a bar and partying with girlfriends in Atlanta without her wedding ring.
"Either she is no longer with Erik, or she's cheating," an alleged witness at the bar wrote on Reddit at the time.
"She was ALL over a guy at The Ivy in Buckhead Atlanta last night. And the way he was holding her while dancing, and while at the bar... they certainly were not 'just friends.'"
But Virginia insisted on Instagram Stories in May 2021 that her wedding ring "never comes off" and photos had captured her right hand -- not her left, which features her wedding ring.
Erik and Virginia got married in August 2020, and on Married at First Sight's Season 12 Decision-Day episode that aired in May 2021 on Lifetime, Erik got down on one knee and presented Virginia with a silicone wedding band when asking if she'd stay married to him.
Virginia chose to remain Erik's wife because she gushed about how she was in love with him and viewed him to be a sensitive, passionate and protective man with a pure heart.
Virginia and Erik, however, had major differences, from their cultural and political beliefs to their timeline for having a child.
Erik also wasn't exactly thrilled with Virginia's close relationship with her guy friends.
"He's sometimes too grown up," Virginia told the cameras on Decision Day. "Erik always thinks he knows best... I'd be lying if I said that I'm confident in where me and Erik are. I am a little scared about the next step in our relationship."
And Erik hoped to become the No. 1 person and top priority in Virginia's life. Erik anticipated only time would break down Virginia's walls.
During the reunion special, Erik and Virginia revealed that Virginia had moved into Erik's apartment with her pets and was liking it just fine.
The couple insisted their relationship was doing well even though they had normal marital problems and arguments.
On the early June 2021 premiere episode of Couples Cam's third season, Virginia and Erik were shown traveling to Pennsylvania for a visit with Virginia's mother and sister six months into their marriage.
Virginia said she and Erik had grown closer together from the "scrutiny" and "heat" they were receiving online.
Virginia said the mean comments about her appearance and acne online were the hardest to deal with but she and Erik continued to reassure and protect one another.