MAFS bombshell bride Jamie Marinos confesses to secret past with intruder groom - and it all unfolded at HIS wedding

Married At First Sight bride Jamie Marinos has been gushing over her on-screen husband Dave Hand – but it turns out she has history with another groom.

Daily Mail Australia exclusively revealed that at the wedding reception of intruder groom Teejay Halkias and Beth Kelly, Jamie made a jaw-dropping confession that sent shockwaves through the experiment back in October.

And now, the Adelaide-born marketing guru, 29, openly admitted she had slept with Teejay in the past – right in the middle of his wedding celebrations.

A show insider spilled the details, saying: 'We were all sitting at the main table, enjoying the wedding, and then Jamie just walked over and said, 'I slept with TJ.'

'The entire room froze. It was like a grenade had gone off—nobody could believe what they were hearing,' the source added.

However, firecracker bride Jamie says she has no regrets.

The 29-year-old signed up for MAFS hoping to find love or, at the very least, 'a really good lesson,' she says.

So far, she has been getting along well with her husband Dave, a caulker from Victoria, who seems to meet all her expectations.

But could their relationship face trouble now that an old flame is in the mix?

Daily Mail Australia can confirm that Jamie and fellow groom Teejay were already acquainted before filming commenced. 

When questioned about their connection, Jamie remained tight-lipped, saying: 'He hasn't entered (the experiment), so I can't comment.'

However, she did admit they crossed paths years ago, adding, 'I knew him when I was 17 in Adelaide.'

While she didn't reveal whether their relationship was strictly platonic or romantic, Jamie confirmed that Teejay is also originally from Adelaide – leaving fans wondering just how deep their history runs.

Teejay and Beth will be one of three couples entering the show as intruders.

One shocked guest recalled the moment vividly: 'I just sat there like, "What?!" She said it so casually, and we were all thinking, "Why would she drop that bombshell at the wedding, of all places?" The whole atmosphere changed instantly.'

Beth, the newly wed bride who had just exchanged vows with Teejay, was also left completely blindsided.

'Beth had no clue about their history,' a fellow guest revealed. 'This is going to blow up, and it's definitely going to cause problems for them.'

The fallout from Jamie's shocking revelation has already started brewing, with one guest admitting, 'Someone asked, "Should we be worried about her [Jamie]?" and the answer was, "Well, we've all got a problem now, don't we?"'

'There's no doubt this will all be on TV, people are going to lose it when they see what happened.'

It appears that this is just the beginning. Producers have teased that the drama between the couples is only going to escalate.

'We knew there would be sparks between some of the participants, but we didn't expect this many past connections to surface,' a production insider hinted.

'This season is going to be unforgettable. Viewers are in for a wild ride.'

Married At First Sight continues Wednesday at 7.30pm on Channel Nine