Filming new scenes for the show, the boys came face-to-face for the first time since the row between their girlfriend's (Georgia and Fran Parman) escalated earlier this week.
Both Tommy and Diags haven't been shy to voice their opinion on the girls' fallout, so it's no surprise things got pretty heated as they came across each other in the street.
In new preview pictures the Essex boys can be seen arguing as they both try to defend their other halves.
As things heated up between the pair, their argument soon took a turn for the worse when Diags and Tommy had to be separated by the show's filming crew. According to pictures, Diags had accused his co-star of being unfaithful.
Now a source has exclusively told Reveal: "Diags did accuse Tommy of cheating. They didn't get physical at any point, but it did get heated between [Diags] and [Tommy] and now they're not speaking."
The boys' confrontation comes after viewers saw Georgia fall out with Fran in Wednesday's episode of TOWIE.
Georgia accused her friend of being "fake" after Fran hasn't spoken to her for weeks and then decided to invite her out to celebrate her anniversary with Diags.
The tension onscreen soon moved to Twitter too as Georgia and Fran embarked on a war of words on the social media site.
While Fran accused Georgia of being "two-faced", Georgia then hit back at her co-star accusing her of wanting airtime on the ITVBe show.
Both girls have since turned to their boyfriends for support.
While Diags has said Tommy is to blame for Georgia and Fran not speaking, viewers saw Tommy blame Fran for the pair's fallout.
He told Georgia: "I wouldn't have let Fran into [Circuit], I like Diags but Fran is supposed to be your friend. She's blanked you for weeks and weeks and weeks and now she's trying to be your pal again."
Georgia then replied: "It's made me realise I don't want a friend like that in my life."
While many are hoping the girls will soon kiss and make-up, something tells us that won't be any time soon - especially now Diags has thrown a massive spanner in the works!
TOWIE continues this Sunday 15 March at 10pm on ITVBe.
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Need a TOWIE refresher? Here's all that happened last series!