Andy Lee sneaks up on girlfriend Rebecca Harding as they prepare to celebrate his birthday

Busted! Andy Lee sneaks up on girlfriend Rebecca Harding as she prepares to celebrate his 39th birthday in isolation

Radio star Andy Lee and his girlfriend Rebecca Harding are preparing to celebrate his 39th birthday in self-isolation together.

But while most people go to extreme efforts to surprise their partners with a gift or card, Rebecca, 30, was seemingly busted being slack by the birthday boy.

‘Someone has left writing the birthday card to the last minute, I see you!’ Andy joked about busting his girlfriend in their Melbourne home.

Busted! Radio star Andy Lee has caught his long-time girlfriend Rebecca Harding (pictured) writing his birthday card last-minute, sharing a photo of the moment to his Instagram

In the photo, Rebecca appeared to be hunched over Andy’s card as she wrote his message in it last-minute.

Sharing a photo of the mishap to his Instagram account, it’s unclear if Rebecca noticed the picture being taken at the time.

Upon discovering his post, Rebecca commented: ‘Well when you have to write one every day… it’s a lot!’

'I see you!' While most people go to extreme efforts to surprise their partners with a gift or card, Rebecca, 30, appeared to be caught red-handed by her prankster beau (pictured)

‘I see you!’ While most people go to extreme efforts to surprise their partners with a gift or card, Rebecca, 30, appeared to be caught red-handed by her prankster beau (pictured)

Cheeky! Hamish's followers were quick to praise Rebecca after sharing her witty response

Cheeky! Hamish’s followers were quick to praise Rebecca after sharing her witty response

His fans, were quick to praise her witty response.

Best comment ever!’ one wrote. While a second commented: ‘Instagram Hall of Fame.’

Last week, the couple sparked speculation they became secretly engaged while celebrating Rebecca’s 30th birthday.

'Did he propose?' Last week, the couple sparked engagement rumours as she 'hid her left hand' in a photograph to celebrate her 30th birthday

‘Did he propose?’ Last week, the couple sparked engagement rumours as she ‘hid her left hand’ in a photograph to celebrate her 30th birthday

‘Is there a ring she’s hiding with her left sleeve?’ one eagle-eyed fan wrote, keen to see if the pair were about to share exciting news.     

‘What’s under the jumper…. (on the left hand area that is) happy birthday!’ a second asked.

Andy chose not to address the speculation, with the Melbourne comedian instead wishing the model beauty a happy birthday in his caption. 

Ready to wed? 'Is there a ring she's hiding with her left sleeve?' one eagle-eyed fan wrote of the couple, who have been together for the past five years

Ready to wed? ‘Is there a ring she’s hiding with her left sleeve?’ one eagle-eyed fan wrote of the couple, who have been together for the past five years