The pair - who are reportedly dating - were first spotted together on a yacht in Cannes, France and while they have so far refused to confirm their relationship, pals close to Leonardo have revealed he took the `Gossip Girl` star to Venice, where they were spotted on a water taxi on a canal.

Leonardo also treated the actress to a helicopter ride to Saint-Paul de Vence, France for a $500 lunch at La Colombe d`Or Restaurant, a stay at the $5,000-a-night suite at Hotel de Paris and a trip on a $52 million yacht and friends have revealed the `Inception` star is determined to please Blake.

A source told US magazine: "I`ve never seen him like this with a girl."

Blake - who previously dated her `Gossip Girl` co-star Penn Badgley, is said to have had a crush on Leonardo ever since he starred in `Titanic` in 1997, with a source commenting: "Being charmed by him isn`t the worst thing in the world!"
sections: Celebrities