'The decision they took would have been taken between all parties with Niall's health being the only consideration'.
Fellow contestant Alex George told the rest of the house he had to leave "due to personal reasons".
While in the villa, Niall had recently coupled up with newcomer Georgia Steel, and her reaction - or lack of - when the Islanders were told the news raised a few eyebrows among fans.
Note there's a specific account dedicated to the mystery of why Niall left, that's dedication for you.
This latest showdown could well have repercussions for Adam, with a recoupling coming up that will put the girls in charge of who they wind up partnered with, and we all know what happens to Islanders who don't get picked... He's such a great guy.
'And I look forward to catching up with him and having some fun with him outside'.
Reacting to Niall's exit, she said: "Obviously I was coupled up with him so obviously I came closer to him than most people in here but it wasn't just that".
What are the US-South Korea war games?
This question led to some of the most interesting exchanges during Trump's sprawling news conference after the signing with Kim. North Korea has been an isolated nation since it first divided from South Korea after the end of World War II in 1945.
"He was actually my friend, my buddy", she aded.
And since his exit, viewers have been waiting for the 23-year-old to give them more of an explanation, but it seems as if Niall's already made his return to Twitter.
Niall started the series being paired up with Kendall Rae-Knight, before personal trainer Adam Collard chose Kendall as a partner for himself.
In a teaser clip for tonight's episode, it becomes clear Adam has pulled Megan to one side for a chat about why she didn't pick him to go on a date and expressed he has an interest in her.
Niall had said before entering the villa his biggest fear was being dumped first, saying: "My biggest worry is being the first one voted out". And just being happy and bubbly. "That's flawless - giraffes, elephants and a fit girl". "You might just ask the time and they'll say 'Sorry I'm not interested'".
'Love Island' continues on Wednesday at 9pm on ITV2.