Leonardo DiCaprio couldn’t be there for his girlfriend Blake Lively’s birthday, but he made up for it by surprising her dad on his birthday. While the Gossip Girl star partied with friends at Darby in New York City last week, Leo was in Australia filming The Great Gatsby.  But when Lively’s dad Ernie celebrated his birthday in L.A. on August 14, DiCaprio gave him an elaborate coloring book as a gift. A witness tells UsMagazine.com, “Blake’s father loved it.” Lively, 24, and DiCaprio, 36, have been dating since May and “are so smitten it’s crazy,” according to a pal.

How do you impress your partner’s family?

Cupid’s Advice:

Getting the stamp of approval from your girlfriend or boyfriend’s folks is crucial if you want to continue dating. Cupid has some tips on how to get on Mom and Dad’s good side:

1. Remember birthdays: Ask your significant other for gift recommendations, then  surprise their parents with a present on their birthday or anniversary like Leonardo DiCaprio did for Blake Lively’s dad.

2. Be polite: It may seem obvious, but be courteous and gracious when interacting with the in-laws. Even after you feel like you have a casual, comfortable relationship, make sure you still show respect.

3. Show you care: Don’t just talk about how much you love their son or daughter; show them how you protect and care for your mate by buying a house together, working hard for a promotion or, when you’re ready, asking for permission to propose.

What’s the best way to develop a good relationship with your partner’s family? Share your comments below.