MAFS AU groom Billy's new girlfriend responds to photos of him kissing bride Lauren

Married At First Sight Australia star Billy Vincent's new girlfriend has spoken out after photos emerged of him kissing fellow participant Lauren Huntriss at a party.

Billy and Lauren, originally married on the show to Susie Bradley and Matthew Bennett respectively, were snapped sharing a kiss at castmate Cyrell Paule's birthday party over the weekend.

A day earlier, Billy confirmed his new romance with an Instagram model called Lily Buhl, who had reportedly never seen the reality show, and thus, Billy's messy break up with Susie.

Lily told Yahoo Lifestyle that Billy came clean about his transgression "as soon as it happened".

"From what I've been told it was a fun kiss," she said.

"He'll still be sleeping on the couch for a few days, but I know there was nothing behind it."

For his part, Billy previously told the Daily Mail he had history with Lauren, and that a hook-up "could have happened".

"Me and Loz had a brief thing. We live a distance from one another but we have awesome banter. She really helped me through some tough times," he said.

Billy's antics can be viewed in Married At First Sight Australia full episodes on ThreeNow.