It begins when Theo tells Amber Davies that he likes both Tyla Carr and Montana Brown but also likes Alex so feels in a difficult situation: “Whoever I go for basically at the moment is going to be upsetting someone else.”
Theo then talks to Montana in the garden about how she feels for Alex and whether she would be open to her relationship being put to the test.
“I think it’s always good for relationships to have tests,” she tells him, although she does tell him her and Alex are enjoying spending time together.
Meanwhile, Jonny has heard on the grapevine that Theo also likes Tyla and speaks to her about it on the Nikki Beach beds. Jonny says that Theo would potentially pick her in a recoupling.
Later that night, Theo pulls Tyla aside and says he also likes her. He is trying to find out how close her relationship is with Jonny. He then tells her he is also considering choosing her if a recoupling came up and the boys got to pick.
Theo then speaks to Jonny and Alex separately. Alex says he feels that Theo has gone about things in the wrong way and been “sly” speaking to the girls before approaching the boys first.
In the beach hut, Tyla says: "Theo is playing a very dangerous game."
Jonny ends up very annoyed with Theo at the end of the night, and is clearly frustrated that Theo has been trying to “crack on” with Tyla, prompting a big argument that rocks the villa.
"Listen to that!" Gabby tells Marcel in this preview clip.
"It's going offski!" reacts Olivia.
Love Island 2017 airs tonight at 9PM on ITV2.