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The loved up couple announced the news on Sunday, with an adorable snap of the pair in Finland.
Luke wrote: "Mrs Mabbott to be…💍♥️ The Northern Lights made an appearance for the perfect moment to pop the question. A night we will never forget."
Aw, congrats guys!
And fans and friends are so happy for the pair, with Maura Higgins commenting: "This is guna be the dreamiest wedding love you both."
While Kady McDermott added: "So happy for you both congrats xxxx".
And Georgia Harrison wrote: "So very happy for you guys you deserve this what a pure love you share."
While Lucie, 24 appeared on season 5 of Love Island in 2019, Luke, 26, appeared on the winter show just months later, at the start of 2020.
The pair met after Lucie messaged Luke on social media, with Lucie later telling The Sun: "We'll always be thankful for Love Island for putting us out there - but people forget we weren't actually on the same series.
"When I was watching the Winter Love Island series I said to my mum, 'He's perfectly suited to me.' He looks so much like Justin Bieber - when I was younger I always used to fancy Justin Beiber - he was my teenage crush.”
Luke had left the villa with Demi Jones, but the pair split during the pandemic after distance put a strain on their relationship.
Speaking to Metro, Demi said: "Unfortunately me and Luke have gone our separate ways now.
"It is a shame because he is a lovely boy and we’re all amicable and friendly, but unfortunately, when we came out of the villa I realised my energy wasn’t being reciprocated with Luke on effort levels and such.
"We drifted [apart] and obviously we’re so far away in lockdown which is a shame, but I wish him all the best."
Huge congratulations to Luke and Lucie! We can't wait for the wedding!
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