Neighbours' Nell and Hugo Rebecchi left devastated by Melanie Pearson revelation

 The truth is out.

Neighbours aired sad scenes for Nell and Hugo Rebecchi on Thursday as they finally discovered the truth about Melanie Pearson's departure from Erinsborough.

Nell expressed regret over her treatment of her new stepmum Terese after learning the real reason that Melanie walked out on the Rebecchis.

Fan favourite Toadie Rebecchi decided that it was time to be honest with his children following the revelation that Nell has been trying to sabotage his marriage to Terese.

Nell had even sent a desperate message to Melanie, begging her to return to Erinsborough to reunite with Toadie.

With Nell's unease out in the open, the troubled schoolgirl was forced to come clean to Toadie about all of her recent scheming.

Terese urged Toadie to go easy on Nell, pointing out how much she was struggling.

After giving the situation some thought, Toadie told Nell about the letter that Melanie wrote before she fled from Erinsborough.

Toadie explained: "There was a reason I didn't let you read it. She didn't just have a change of heart about being married to me – she decided that she wasn't cut out to be a stepmum to you and Hugo.

She's been a stepmum before, so it's not like she didn't have anything to base it on. I never wanted you to know, because I knew how much it would hurt you. Melanie is gone and I'm glad, because I hate how much she has hurt all of us."

Toadie also spoke separately to Hugo and was saddened when the young boy started to blame himself for Melanie's departure.

In the fallout, Nell finally accepted that Mel has gone for good, leading to a thaw in relations between her and Terese.

With Melanie due to return to Neighbours later this year, it's only a matter of time before we hear her side of the story.

Neighbours releases new episodes from Mondays to Thursdays for free on Amazon Freevee in the UK and US. In Australia, the show airs from Mondays to Thursdays at 4pm on Channel 10, with a 6.30pm repeat screening on 10 Peach.