Peter, who has been dating his girlfriend Emily for a year, tweeted fans with the message, "I've got a secret" today (8 July), along with a website link.
There is no clue as to what his surprise is, but there is a countdown clock which runs out at 8am next Monday (15 July).
Peter has also created a page on social networking site Facebook and it features a picture of himself with his finger over his lips.
It states: "Peter's got a secret that is going to change everything you know about him. But he's not quite ready to tell just yet!"
Fans have now been guessing as to what his big surprise might be - but it seems most are just hoping he and Emily have got engaged.
When asked what they thought it could be, one wrote: "Getting engaged/married to his lovely Emily.....perfect couple...." Another added: "Getting married or having a baby or both? xx"
However, one fan said: "Oooooo am so excited. Defo something work related I think xxxx"
Check back here on Monday morning, as Reveal will be reporting on what his big news is. We can't wait to find out either!
What do you think Peter's secret is? Tell us below, as the best comment from across the website each week wins £50!
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