Delta Goodrem and boyfriend Matthew Copley in a rare public display of affection at BST Hyde Park

Delta Goodrem is notoriously private when it comes to her relationship with her boyfriend, Matthew Copley.

And on Saturday, the singer and her beau put on a rare display of affection as they attended the American Express Presents BST Hyde Park event in London.

Delta, 38, wore a black jacket as she leant closely to her boyfriend, who wrapped his arm around her.

She curled her blonde locks and wore a natural makeup palette to the event, which had pop group Take That headlining that evening.

During the show, Delta threw her hands up in the air as she sung along to the group’s greatest hits.

Delta Goodrem and her boyfriend Matthew Copley cuddled up in a rare public display of affection at BST Hyde Park in London on Saturday

Delta and Matthew first met while on tour in late 2017 and confirmed they were dating in January 2018, but have mostly kept their romance under wraps.

But Matthew let slip last year he was madly in love with Australia’s sweetheart.

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The guitarist shared a tribute post on Instagram in May to celebrate the final show of Delta’s Bridge over Troubled Dreams tour.

‘Words can’t describe the feelings I have today for the last show of tour! Humbled, excited, nervous, sad, proud, nostalgic just to name a few,’ he began.

Matthew then told Delta how ‘proud’ he was of her and their incredible team.

‘I have loved every minute of this process and can not thank you enough for trusting me with the responsibilities and roles I have done with you!’ he added.

Delta curled her blonde locks and wore a natural makeup palette to the event, which had pop group Take That headlining that evening

‘Here’s to taking this show worldwide as, the best is yet to come… I love you.’

In 2021, Delta explained it ‘feels right’ to just keep the details of their romance to themselves.

‘I understand that people are interested, and I get it. I think that’s a lovely thing. But [keeping things private] feels right,’ she said.

She added her private life would stay private because she ‘got into [the industry] for music and connection and touching lives’, not to be a public figure.

During the show, Delta and Matthew threw their hands up in the air as they sung along to the group’s greatest hits