Love Island power couple Marcel Sommerville and Gabby Allen saw their relationship put to the test with a lie detector challenge on Tuesday night’s show.

With Allen told she was lying when answering several questions – one of which asked if she loved the former Blazin Squad star – fans were left a little upset.

She was also asked “can you see a long-term future with Marcel?” and “are you looking forward to having sex with Marcel?”

The pair, who have been an item since Allen entered the Majorcan villa in the second week of the ITV2 dating programme’s seven-week run, also had a a rare argument.

Viewers comforted the “devastated” Sommerville with messages of support on Twitter.

Jadine posted: “I’m honestly heartbroken for Marcel,” while Sofia Strickland wrote: “I feel sorry for Marcel … Gabby if you don’t want to be with him tell him.”

Nichola-Louise tweeted: “Marcel looks heartbroken devastated for him #LoveIsland doubting Gabby now.”

But all was soon back to normal as Allen declared her love for Sommerville with the help of her fellow Islanders.

As the pair spoke on the balcony, the remaining girls spelt out a message of love on her behalf.

:: Love Island returns at 9pm on Wednesday.