"They have been friends for a while and met up a lot secretly when Paris was filming her TV show in London," the News of the World quoted a pal as saying.
"They have always been very flirty and Paris loves how outrageously funny David can be on nights out. She's won over by his sophistication. They've been speaking on the phone a lot and have so much in common. There's a real chemistry between them. They natter about everything and she likes the fact he doesn't treat her like a bimbo," the pal added.
The pal continued: "It's early days but they are both giving off really positive vibes to everyone. Sense of humour is so important to Paris and she has always loved English guys. And after a few disastrous relationships she's hoping this one will stick."