So, I was in the library and I come across an article about 24 things man must bear in mind here.
不论你的一瞥有多隐秘及迅速,女人都会知道男人的目光何时扫过她的胸部。
Girls always know no matter how fast and how secretive/indirect your glimpse is as long as you did look at their chest.
So guys, don't think you can get away with it each time. Most of the time they knew.
送上一份她无意间曾说过喜欢的东西,其效果将比送上一份价值超过该物品一倍的礼物要好上一倍,因为这表示你在用心聆听她说话。
It is best to buy her something that she unintentionally said she like it rather than a gift that is more expensive because it shows that you did listen to what she said.
I am too lazy to translate the rest.