WTF: Guy Sebastian reveals he dated Delta Goodrem

Guy Sebastian, you sly dog, you.

The Aussie singer has made the surprising revelation that he dated the "hot chick in Neighbours" for four months after winning Australian Idol in 2003. Yep, he's talking about Delta Goodrem!

What went down between them? Watch Guy's confession on KIIS FM's Kyle and Jackie O Show above. Secret squirrels, those two…

Guy, 33, dated Delta, 30, while on a break from his childhood sweetheart, stylist Jules, who he married in 2008 after nearly nine years together. Well, not including the Delta interlude obvs.

Since then, Guy and Delta have stayed friends and kept that innocent romance on the down-low. How did they keep it so hush-hush?!

Guy and Jules now have two children together, 10-month-old Archer and two-year-old Hudson.

Delta, meanwhile, has dated singers Brian McFadden and Nick Jonas, as well as tennis player Mark Philippoussis.

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