And the couple looked as loved-up as ever as they shared a kiss and hug on the plush boat.
Matilda, who entered the Love Island villa last year as a bombshell, put on a busty display in a black bikini which showed off her toned physique for the outing.
She sent temperatures soaring as she posed in the two piece, which she accessorised with bracelets on her left wrist and a stylish pair of black sunglasses.
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Love Island star Matilda Draper, 24, posed up a storm in a black bikini while soaking up the sun in Rhodes
The reality TV star had been enjoying a holiday with her boyfriend, TOWIE star Roman Hackett, 22
The 24-year-old captioned the post: 'Boat attire.'
Other pictures shared during Roman and Matilda's week away revealed they had jetted off with fellow season 11 islander Jess Spencer and her boyfriend Braydon Hackett - Roman's cousin.
Jess and Matilda struck up a friendship on the show last summer and have remained besties on the outside.
While Jess was in a couple with Ayo Odukoya during series 11, Matilda had been coupled with sweet-shop owner Sean Stone.
During the first episode of her new podcast with Roman this week, titled Raw and Reality, the reality TV star opened up on her time in the villa and with Sean.
Roman read out a question from a fan: 'Do you ever get icked out that Sean existed with Matilda?,' before the couple burst into laughter.
Matilda later added: 'That's such a juicy one!
'I think that when you're in Love Island you're in a bubble and I sort of went in there and didn't massively fancy anyone to be completely honest.
Love Island's Matilda Draper slams bosses for 'twisting narrative'
