Niall was previously paired with Georgia Steel.
Viewers of Tuesday's episode will find out about Niall's departure as well as why Adam has incurred the wrath of Rosie, after a preview was shown of Rosie confronting her partner in front of the other Islanders.
ITV have also revealed they "have no current plans" for Niall to appear on spin-off show Aftersun with Caroline Flack.
In last night's episode, Georgia claimed she and Niall were more like close friends.
I'm obviously sad that Niall's left the villa.
Taken aback by his sudden departure, Dr Alex admitted Niall will be missed by all as he reiterated how much of a "great guy" he is.
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... "And I look forward to catching up with him and having some fun with him outside".
'He was actually my friend, my buddy'.
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".
He added: "The best way to my heart is being open and upfront". My ideal date would be going to see animals at a safari park.
This week it will be up to the girls to decide who they would like to couple up with.
Megan Barton has set pulses racing as she has joined the Love Island villa.
All Love Island couples could be forced to recouple on Tuesday night - hours after Niall Aslam's shocking exit was revealed.
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