Blake's dating rule has landed her the biggest A-list fish: Leonardo DiCaprio

Blake Lively and Leonardo DiCaprio have been heating up the European mainland since they were spied getting cosy at Cannes last month and friends of the 36-year-old Titanic actor say he’s smitten with the Gossip Girl star.

She’s the face of Chanel Mademoiselle handbags and he’s the über-hot
commitment phobe who, according to pals, has met the woman of his
dreams.

They started flirting at a dinner party in New York last autumn but only started seeing each other at the beginning of May,’ reveals our source.

It’s been an incredible whirlwind for them. Leo wanted Blake and has been pursuing her ever since they met.’

So just how did the girl who used to have pictures of Leo on her bedroom wall snag the eligible bachelor? 

Blake loves dating book The Rules and has been following it to the letter,’ reveals a friend of the 23-year-old star.

She’s been denying him sex and wouldn’t even give him her number for the first three months.

‘She knew Leo could have any girl he wanted and she figured she had to stand out from the crowd.’

The savvy 5ft 10in actress also made sure Leo – who’d been dating model Bar Refaeli – was single before anything happened between them.

Blake told him he had to break up with Bar before she’d even go on a date with him, so he did,’ reveals our insider.

I’m not even sure they’ve slept together yet.

Blake’s only ever slept with three guys, so she doesn’t jump into bed with just anyone.

‘She’s making him work for it – and he’s fallen hard for her.’

After Cannes, the new couple went to Italy and were snapped holding hands in Monte Carlo, where Leo’s wooed her with all his might and money.

He took her on private yachts, helicopter rides and out for amazing meals at some of the world’s best restaurants,’ confides the friend.

And last week he started introducing her as his girlfriend.

‘She looks totally love struck and he never lets her out of his sight.

‘It’s really sweet.’

What a Titanic catch, eh?

SEE PICTURE Taylor Momsen models Madonna‘s clothing range here>>

SEE PICTURES Gossip Girl Taylor Momsen‘s Style File>>

SEE PICTURES Gossip Girl‘s Taylor Momsen models for New Look>>

SEE PICTURES Gossip Girl – behind the scenes of season 2>>