The UK singer also says fans will realise the band's friendship is real from watching their new E! show.
The Wanted Are "Speechless" After US Shows Sell Out
The 'Glad You Came' singers have also thanked fans for getting their US single to 36 on the iTunes US Chart.
The Wanted says they are 'speechless' after their US shows in Philadelphia and Los Angeles sold out.
"Philly! Thank you for an amazing sold out show," the band tweeted. "We're speechless :x #thankyou #soldout #TWUSAFanmily.
"Can't comprehend that our #TWUSAFanmily sold out our show in Los Angeles! You are all unbelievable #Thankyou #SoldOut."
The Wanted's Max George also gave a special thanks to fans who have purchased the band's first US single 'Glad You Came', which is currently at number 36 on the US iTunes Chart.
The 'Warzone' singers will continue their US tour with a performance in Chicago, Illinois on 26th January.
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The group can be seen rehearsing for the promo, discussing Jay's beard and playing with tape measures in the footage.
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