The One Direction singer wrote the Tweet to Katy following her X Factor performance at the weekend. She said that she found the tweet ‘cute.’
The smitten 20-year-old wrote: "I love you @katyperry! Thank you! Ps. Will u marry me?"
Katy performed her new single ‘Roar’ for the live X Factor show on Sunday. She wore a raunchy, tiger-themed dress complete with cute little ears.
He didn’t seem to mind the fact that Katy is currently still dating singer John Mayer, who is slightly older than the One Direction singer at 36-years-old.
The pair have met before and Katy helped Niall through boot camp and secured his place in boy band One Direction whilst she was a guest on the 2010 X Factor.
It is rumoured that the ‘Roar’ singer is hankering after a full time judge job on the show after declaring: “I would love to give constructive criticism. I know that you guys [the judges] try your best to give constructive criticism, because it’s actually really hard up there when you become an artist.”
Katy partied late into the night with boyfriend John after her X Factor performance. The loved up couple revelled at Shoreditch House in London until 4am. Katy could be about to consider a valid marriage proposal, as the pair are rumoured to be planning a wedding as Katy supposedly has marriage on the mind!