Married At First Sight brides Belinda Vickers and Joanne Todd formed a close bond while filming season eight of Nine's social experiment.

But if rumours are to be believed, the 30-year-old dancer and 40-year-old barber are no longer on speaking terms - despite still following each other on Instagram.

A source told Daily Mail Australia that Belinda and Jo haven't talked to each other for almost four months.

'They have drifted apart and are no longer talking,' claimed the source.

According to the insider, the women's friendship started to fall apart around the time Belinda split from her TV 'husband' Patrick Dwyer.

'There's no bad blood between them. Belinda is doing her own thing... Patrick and Jo have always been really good friends.'

When contacted for comment, Jo denied the claims and insisted her friendship with Belinda was stronger than ever.

It comes just weeks after Patrick denied rumours he was dating Jo after they looked cosy in an Instagram selfie.

Patrick ended his relationship with Belinda earlier this year.

They called it quits in July after about nine months together. 

Patrick said in a statement: 'We would like to address the rumours of our split and confirm we have gone our separate ways.

'We have enjoyed a relationship together for over nine months; however, we do not want the same things in love and life.

'We appreciate all the love and support we have received through our journey.'