'Married At First Sight' groom Mat reveals how he lost 6kg in 10 days...

If you're watching the new season of 'Married At First Sight' Australia, you will be familiar with Mat Lockett.

Mat - who's married to Alycia on the reality show - has so far kept a low profile on screen (except for showing up late to his wedding).

But the 32-year-old has just revealed some behind-the-scenes secrets in an interview with New Weekly magazine.

The Victorian-based groom says he lost six kilos within 10 days because his new wife was "clingy" and "smothered" him.

"I was freaking out about the marriage - Alycia had her vows written for so long and I felt she was married to the experiment, not me.

"I started feeling smothered and lost six kilos in 10 days. I wasn't sleeping at all and my mind went into overdrive," he explained.

"I'm not good with clingy people at all and it was killing me."

The plumber shared that the pressure first started during the couple's Fraser Island honeymoon, but that he felt pressure from fans to make the relationship work.

"For me, I was really challenged because I knew Australia was going to fall in love with this one [Alycia].

"So I was scared I was going to get chased with pitchforks and stuff if I didn't fall for her."

They make such a cute couple so we hope everything works out for them!