LOVE Island fans have raged at Harrison for playing two girls off against each other and lying to Toni.
Over the past few days, Harrison and Helena have enjoyed some flirty banter, much to the annoyance of US star Toni.
On tonight's show, the boys were given the power to pick which girl they wanted to couple up with.
Ben picked Helena, meaning Harrison was left with no other choice but to choose Toni.
After the recoupling, Harrison told Helena that he planned his speech for her but changed it last minute for Toni.
Harrison told her: "I felt that finally we were going to couple up, I was so ready for it, I was so ready to sleep in a bed with you."
Just moments later, Harrison admitted to Toni that his decision was "50/50", despite him insisting to Helena that he was set to pick her.
Harrison said: "No, I didn't know what I was going to do, I was 50/50. I didn't know what I was going to do honestly.
"I just think it's hard for me because yesterday you were up there but obviously that's 24 hours and we've not been talking."
Harrison went on to say: "Can we just be normal?," before he and Toni shared a small peck.
The next day, Toni apologised to Helena for saying she was a "b****" for kissing Harrison in the Hideaway.
Helena said she is convinced Harrison is telling everyone different things and called him over.
After being grilled, Harrison admitted he fancies both girls and had not made his decision yet.
Later that evening the infamous heart rate challenge made a return to the Love Island villa.
The Islanders took it in turns to dance a sexy routine for the opposite sex while wearing a heart monitor.
Harrison picked up Toni and gave her a big kiss and then kissed Helena straight after, which left Toni looking unimpressed.
Viewers have also slammed Harrison's move.
One wrote: "Harrison is genuinely such a horrible person and so is Helena. The way they're acting and still stringing Tonie along is so disgusting. Please get them out. Helena is some weirdo as well.. he's lit 22, is she ok?"
A second said: "This Harrison and Helena ship is so disgusting to me, I can't."
A third said: "Harrison. Disgusting. Vile. Get out the villa."
A fourth commented: "Harrison is a bare faced liar, he told Helena he had a speech prepped and then told Toni he honestly didn’t know who he’d pick YOU LIARRRRR."
Someone else said: "Harrison is so disgusting. I hate this man, you're a liar! Brilliant Actor. Let the truth come out!"
Another added: "50/50 Harrison you bare faced liar, stop making my Toni feel like shit over you liking Hideaway Helena. Hope karma comes around for you."
