The ex-footballer, 25, who was runner-up in the ITV2 winter series with ex-girlfriend Siânnise Fudge, 28, asked Chelsea to marry him last month.
Luke and Chelsea now live together in the same property in Battersea, London, which the Islander once shared with Siannis and their dog Nala – and the engaged couple have a pooch of their own called Tequila.
‘Winners are smiling’: Love Island star Luke Trotman is engaged to girlfriend Chelsea Mena after a three-month romance, MailOnline reveals
The ex-footballer, who was runner-up in the ITV2 winter series with ex-girlfriend Siânnise Fudge, asked Chelsea to marry him last month
A source told MailOnline: ‘It was love at first sight with Luke and Chelsea.
“Their love blossomed overnight into a serious relationship and even though it hasn’t been long, they both know they are the one for each other.
“Luke has made London feel like home to Chelsea who is from Australia and they are very happy together.”
Luke and Chelsea, who is a former personal trainer and now works on TV, went public with their relationship on Instagram in May – six months after Luke split from his former Love Island co-star Siânnise.
Siânnise and Luke were one of the golden couples from the 2020 winter series filmed in South Africa, but lost out in the final to winners Paige Turley and Finn Tapp.
MailOnline has approached representatives for Luke and Chelsea for comment.
Moving on: Luke and Chelsea now live together in the same property in London’s Battersea that the islander once shared with Siânnise and their dog Nala – and the engaged couple have a pooch of their own called Tequila
In a series of Instagram stories saved to Luke’s profile, the reality star uses a diamond ring emoji to caption an album of memories with Chelsea.
The couple have enjoyed nights out together, tennis and basketball games and sunny walks with their dog.
Luke has an Instagram profile for the couple’s tequila cocker spaniel and is listed as the pup’s father on the account.
The star previously had a similar page for cockapoo Nala, the dog he shared with Siânnise.
In July, Luke and Chelsea holidayed in Barcelona, just days after the Australian finished work at this year’s Wimbledon.
He shared photos in all white from the main court after working behind the scenes on a new Netflix tennis documentary from the makers of F1 hit Drive to Survive.
Ex: Luke and Chelsea, who is a former personal trainer and now works on TV, went public with their relationship on Instagram in May – six months after Luke split from former Love Island co-star Siânnise.
Young love: In a series of Instagram stories saved to Luke’s profile, the reality star uses a diamond ring emoji to write a scrapbook of memories with Chelsea, including from the couple’s recent holiday in Barcelona
In March, Siânnise denied reports that she was dating model Chris Beviere, saying: “I’m very single and I’m happy with that at the moment.”
The reality beauty opened up on Instagram last month about her battle with depression and anxiety, which has resulted in weight loss, mood swings and trouble sleeping.
Alongside two pictures of her taken a year apart, she said: ‘This time last year I was suffering from anxiety and depression behind closed doors. This resulted in me having insomnia, extreme mood swings and losing two stone in weight.’
She explained that her confidence plummeted and she “lacked love” in herself, continuing: “I couldn’t look at myself in the mirror because I didn’t recognize myself both physically and mentally.
“I completely lost myself and wasn’t sure who I was as a person anymore.”
Career: Aussie beauty Chelsea shared photos in all white from the main court after working behind the scenes on a new Netflix tennis documentary from the makers of F1 hit Drive to Survive
