Big Brother housemate Paul has come under fire after throwing his support behind Olivia during a kissing challenge.

On tonight’s episode of the reality series, the housemates go head-to-head to compete for best kisser in Big Brother’s Kiss Cam.

One by one, they make their way into the diary room, where they’re met by a glass screen and are given the chance to show off their skills.

As the rest of the housemates watch on from the living room, they are then given the task of deciding who the best kisser in the house is, albeit only from seeing them make out with, well, themselves.

They will then write the name of the best and most passionate kisser on a whiteboard to vote, however housemates cannot vote for themselves.

The two best kissers will then win an evening of exclusive luxury.

Big Brother housemate Paul has come under fire for disrespecting his girlfriend (Picture: Shutterstock for Big Brother)

Before it all unfolds, Olivia sums it up best when calling the challenge ‘embarrassing’, even more so when she points out her dad will be watching.

Ahead of Paul’s kiss Olivia throws some shade and declares: ‘This ain’t gonna be passion, this is gonna be pure filth.’

As he finishes up, Paul, a 23-year-old security officer from Liverpool, reveals he ‘wanted to keep going’.

Olivia has found herself wrapped up in the drama (Picture: Shutterstock for Big Brother)

However, his actions after the fact end up riling a few of the girls up, with Kerry, Chanelle and Olivia less than impressed when discussing the fact he originally voted for Olivia to win best kiss before changing his vote to Tom.

Olivia shares: ‘Noky said not to be a grass but before Paul put Tom on the whiteboard, he wrote my name.’

Touching on the fact Paul has a girlfriend, Chanelle chimes in saying that was clearly the reason he decided to avoid writing any of the girl’s names’ down.

‘Oh I know. Thank f*** he changed it,’ Olivia adds.

A few moments later, Kerry adds that in her opinion, ‘he’s done too much’ before Olivia defends herself and says she’s never ‘reciprocated or entertained’ it.

The security officer from Liverpool is not impressed when he finds out about what’s being said (Picture: Shutterstock for Big Brother)

Later, after learning about the girls’ conversation through Chanelle, Paul talks to Hallie about the situation saying: ‘I don’t understand why they are getting involved in my s***. My girlfriend is my girlfriend, they don’t know her.”

While this challenge might not have sparked any saucy moments between the remaining housemates, viewers were treated to an actual kiss earlier this week when Jordan and Henry locked lips.

On Tuesday night’s episode, Jordan was seen cosying up to Henry in bed before kissing him on the lips.

Unsurprisingly fans lost their minds and shared their thoughts on social media, with many shocked but also delighted by the development.

Big Brother continues tonight at 9pm on ITV2 and ITVX.

Got a story?

If you’ve got a celebrity story, video or pictures get in touch with the Metro.co.uk entertainment team by emailing us [email protected], calling 020 3615 2145 or by visiting our Submit Stuff page – we’d love to hear from you.

MORE : ‘I’ve spotted a shapeshifter in the Big Brother house – their plan is working’

MORE : Big Brother fans emotional over Jordan after he reveals harrowing truth about late dad

He is not happy when he finds out!