Calum, who is dating model and former Made In Chelsea star Ianthe Rose Cochrane-Stack, was relaxing in the sunshine earlier today with his girlfriend.
The couple looked blissfully happy as they enjoyed a roof terrace lunch in Fulham, London.
On last night's episode (29 June), viewers saw Calum surprise the islanders in the villa with a grand entrance as he returned to the show that made his name after 10 years.
Calum casually strolled in the villa with two bottles of champagne in his hand, declaring: "Wow, wow, wow, 10 years later. Love Island, what is up?!"
While the girls were getting hot under the collar at Calum's arrival, the boys were soon jumping for joy as Calum revealed that he would be taking them out on a wild boys' night out in Magaluf.
We'll see in tonight's show that some of the boys invite girls back from the club to the villa! And, it's not long before more drama kicks off.
It was only a brief stint for Celebrity Big Brother star Calum, but he called the dating show which he had starred on in 2005 and 2006 as "the coolest experience ever".
He added: "I was a boy when I went on the first show and now I've turned into a man."
Love Island, ITV2, Sunday – Thursday at 9pm. Catch-up show, Saturday, 9pm on ITV2.
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