The 24-year-old may have previously said her relationship with Lewis has been "difficult" since the pair left the CBB house this summer, but it seems they are determined to make things work between them... and possibly all the way to the aisle.
Gushing about her boyfriend on Instagram, Marnie told her followers: "He's the kind of magic you marry."
Marnie had shared an intimate black and white shot of herself and Lewis kissing while on holiday in Ibiza.
It follows up plenty of loved-up photos of the pair recently, with Marnie recently gushing about spending time with Lewis on the social media site. She said: "Days with this cheeky one never get boring."
It's not the first time Marnie and Lewis have referenced marriage, as both reality stars confessed that they thought each other could be The One following their time on CBB.
Marnie and Lewis initially met in the house and romance blossomed for the pair.
Lewis was the first to speak publicly about marrying Marnie. Following his CBB exit, he appeared on Loose Women and told the panel if he is still with Marnie in five years time, she will have a ring on her finger.
He said: "I know things have moved quickly so far... I do have a five year plan and I'd love to still be with Marnie by the end of it. I think, if I am with Marnie in five years time, I'd be surprised if she doesn't have a ring on her finger."
Despite seeming smitten, Marnie and Lewis' relationship hasn't been plain sailing since leaving CBB.
Marnie dismissed speculation that she and Lewis had split in October, but admitted their romance has been "difficult" in reality. She explained during an appearance on Loose Women: "Things on the outside are very different to how they are [inside the CBB house] and we have kind of got a completely different relationship to what we had in there, so it's back to basics."
Marnie stressed that she "100 percent" is in love with Lewis and added: "I haven't cared about anyone like I do about Lewis."
Lewis, meanwhile, has credited Marnie for being his "rock." Gushing about his girlfriend, he said on Instagram: "My best mate #rock."
Confusingly enough, though, Geordie Shore fans are currently watching Marnie's romance with ex Aaron Chalmers play out on screen during the show's thirteenth series. Fans finally found out that Aaron had asked Marnie to be his girlfriend on the show, but after a string of rows he quit the series and headed home early from filming in June.
Aaron has since revealed that he and Marnie no longer speak.
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