Along with Michael Owen's daughter Gemma, he is the second contestant with the famous dad.
Love Island heats up when six new men join the girls at Casa Amor while six women spend a week in the original house trying to attract attention and win hearts.
He was the second contestant with the famous dad, alongside Michael Owen's daughter Gemma Owen - and it wasn't long before he revealed who his renowned dad was.
So who was the Casa Amor that surprised Jack Keating?
Jack Keating is a 23-year-old from Dublin living in London, where he works in social media marketing.
His father is Boyzone singer Ronan Keating, and his mother is a model and TV personality, Yvonne Connolly. He has two sisters - Missy, 21, and Ali, 16.
Jack revealed his dad "will watch when [he's] sure," adding, "He hums to me, my dad and I are close, we're good friends."
In response to Jack's message from Love Island on Instagram, Ronan's supportive dad said: "Let's go, son."
The singer later shared a photo of Jack and himself on Boyzone, saying, "Who's Jack!!!"
Family is important to Jack, and he said he "may avoid someone who isn't very close to their family" because he's "a very family-oriented person."
Jack chose Love Island this year because he had been a bachelor for a long time, "probably four or five years." She said: "I miss that spark I don't get in the dating world like I've been dating for a long time. And I just thought, why not?
Jack hopes to inject "a bit of energy" into the cabin, adding, "I think I'm a pretty positive and fun person, so I'm also thinking about good conversation and a bit of Irish charm."
