Soaking up the sun (and in an exotic location by the looks of things!), Ian shared a gorgeous photo with his wife-to-be to wish his followers a happy Valentine's Day.
And not usually one to get involved with the mushy holiday, it seems Nikki has turned the US actor into a Valentine's convert.
Taking to Instagram, Ian shared a snapshot of himself and Nikki by the sea. Both rocking beach hair and bronzed glows, the couple look incredibly cute as they cuddled up together for the camera.
Gushing about his other half, Ian wrote alongside his post: "I used to think this day was a conspiracy of chocolatiers and florists, but I realise that taking a day out of our busy lives to celebrate the love in our lives is so important and should be every day. Celebrate love in your life - it's what makes the world go around..."
Nikki, meanwhile, also took to Instagram to pay tribute to her beau. Sharing a black and white snap of the pair, the Twilight actress simply said: "This..."
The couple's recent PDA's come after Ian and Nikki got engaged last month.
Following their engagement, Nikki went on to confirm their happy news, claiming Ian is the "most amazing man ever".
Speaking about her future husband, she said: "He's so beautiful inside and out! He's quite possibly the most amazing man that's ever walked the planet. It's crazy. I'm so lucky. I love him!"
The pair began dating during summer last year.
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