Leonardo Dicaprio has given Blake Lively's dad a colouring book for his birthday.

The 'Inception' actor presented the 24-year-old actress' father Ernie, who was celebrating his 64th birthday, with the item during dinner at Madeo restaurant in Los Angeles, and the actor was thrilled with his artistic gift

A source said: "Blake's father loved it."

The 36-year-old star - who split from supermodel Bar Refaeli in May after dating her for five years - is said to be "smitten" with the 'Gossip Girl' actress.

Another source added: "[They] are so smitten it's crazy. I bet they get engaged in the next six months!"

The pair - who have been spotted on a number of luxurious dates around Europe - were recently seen spending time at Disneyland in Anaheim, California, with a group of friends after the 'Green Lantern' star attended the Mtv Movie Awards.

Leonardo - who missed celebrating Blake's 24th birthday yesterday (25.08.11) due to his 'Great Gatsby' filming commitments in Australia - treated her to a helicopter ride to Saint-Paul de Vence, France, where they enjoyed a $500 lunch earlier this year.