Andy Lee won't propose to Rebecca Harding until she answers one very important question.

Ahem.

It seems Rebecca Harding is keeping a secret from Andy Lee.

A secret eight years in the making.

A secret so big, so scandalous, and so life-changing, it’s stopping Andy from proposing to her.

Yep, Rebecca won’t tell Andy her ENTER score and that be a very important number ¯\_(ツ)_/¯.

For those of you playing along at home, an ENTER score is the mark Victorians get at the end of year 12.

Andy dropped this lil’ bombshell on Tuesday while chatting to KIIS 101.1’S Jase and PJ.

“I have a funny thing with Bec,” he began.

“Bec has never told me her ENTER score, what she got when she finished year 12. Never told me or told anyone.”

We know how to holiday. This was us watching amazing sea life above the local reef. Dorky smile courtesy of a couple of rosés and the most amazing view. @discoversoneva #discoversoneva

A post shared by Rebecca Harding ???? (@rebeccalharding) on Jul 8, 2018 at 6:47pm PDT

“I said to her, ‘If you want to be proposed to, we can’t have any secrets’,” he continued. “‘So the day you tell me your ENTER score is the day I know you’re ready.”‘

While Bec thinks the 37-year-old is joking, he told the radio hosts he was very serious about this, erm, very serious matter.

“So I don’t feel any pressure at all until I know,” he said.

Andy and Bec started dating in 2015 after she served him in a Melbourne cafe.

They briefly broke up in 2016.

They’re now back together.

But it looks like they won’t be getting married until Bec fesses up ¯\_(ツ)_/¯.