The couple were surrounded by co-stars on their yacht but looked as if they were in their own little world while enjoying the sunshine over the weekend.
Ferne showed off her fab figure in a cute black, grey and red bikini, while Charlie kept covered up in a shirt.
Although joined by pals including Charlie's sister Chloe Sims and Lydia Bright, the loved-up duo only had eyes for each other as they lounged on the luxury boat.
TOWIE fans have watched Ferne and Charlie experience highs and lows in their relationship since they joined the show last year.
We've watched their happiest moments and also their most dramatic moments, including cheating allegations on both sides. But now they appear to be stronger than ever – which we'll see on the upcoming series of the show.
Speaking to Reveal before jetting to Marbella, Charlie said: "We've had our ups and downs and we got together when we were very young but we're in a different relationship now. We're very happy together now. We're more mature and everything is going really well. We're just looking forward to the future."
Meanwhile, Ferne told us: "I love Charlie's personality. We're completely different and he levels me out. He's got a calming, laid back nature about him and it's what I need in my life. He's always very kind. The show made him out to look like a complete d*ck and something he wasn't."
Speaking about what attracts her to Charlie, Ferne added: "Looks are important to me, but most importantly is someone I connect with, someone I can be myself with. I've been with really good looking guys in the past that made me feel like an idiot and a weirdo.
"I love Charlie's face and I think he has a really brooding, dark look."
Ferne, Charlie and most of their TOWIE castmates arrived in Marbella over the weekend to film the first episode of the twelfth series, which kicks off on ITV2 later this month.
Got an iPad or iPhone? Reveal Mag is specially designed to fit!