The teasing practice assists in discerning the actual feelings of the male and the female involved.Traditionally, a Filipino woman is "shy and secretive" about her feelings for a suitor.
In the Chinese culture, many consider it rude just to look someone directly in the eye, cross your arms or legs, or have your hands in your pocket when you are speaking to them. If she smiles at you, it’s probably okay to ask for her cell number.
You don't have to bring gifts for all the lady's friends and colleagues; gifts are supposed to be given only to special people not hand over to anybody.
If you are invited to a get-together, it's a different thing; then you must bring something with you; but you can just buy a bottle of champagne and flowers for the hostess - people do not expect you to bring a special gift.
This is a tricky area because there are so many unknowns. Being thoughtful is one way to say to someone, "I know you." Everybody wants to feel special, and paying attention to details is the most profound form of love. Once you have those answers, getting a meaningful gift will be easier.
There's no easy answer: how much you should spend on your partner for the holidays depends on the stage you are in in your relationship. Everybody wants to be "known", whether they actually put language to it or not.