According to one British newspaper, the couple met at the NME awards earlier this month.
And despite the five-year age gap the couple have been inseparable ever since.
A friend of Rupert's said: "He and Katie have been seeing each other for a few weeks and are both really keen. They share a love of music so as soon as they met they clicked. It's early days but they are very happy together."
Katie, originally from Wales, dated Babyshambles front-man Doherty for nearly a year after meeting him at a gig in East London however, within weeks Katie had become caught up in Pete's drug abuse.
She eventually kicked drugs and is now working towards her own successful music career fronting rock band Bonnie And Clyde.
From Pete to Ron Weasley....Who saw that coming?