As they struggled to launch their careers int their teens, Jade would often let Joe join her on stage for a sing song while performing in pubs and clubs back home in South Shields.
© WENN
© WENN
Joe would also invite Jade to sing at his gigs.
And despite being from the same small town, incredibly they both went on to win The X Factor - with Joe as a solo act in 2009 and Jade as one fourth of Little Mix last year.
Joe, 21, tells Reveal: "Jade and I are really good friends. We grew up in the same town and met through singing.
"She used to have a little residency in a pub and I used to go along and sing, and then I'd let her sing at mine. We'd help each other out and perform duets."
Although success for Jade came last year, Joe also reveals that she had tried to win The X Factor long before he did.
"She actually auditioned one or two years before me and then came back last year and tried again," Joe says.
The pair speak regularly and Joe has promised Jade that he will always be on the end of the phone if she needs a helping hand.
"I will always be here if Jade needs any advice, as I've been through that whole process myself and know how it works,' he adds.
"It's really nice to see that we're both doing what we wanted to do all along."
Joe's new album 'Here's What I Believe' is out on 10th September. You can pre-order it here. You can also watch his new video below.
What do you think of this year's X Factor? Tell us in our comments box below.
Read more: Joe McElderry: "I don't need an X Factor ad to prove I'm successful!
Read more: Little Mix's Jesy Nelson steals Cheryl Cole's Batman style
