A diplomat is a man who always remembers a woman's birthday but never remembers her age.
真正的紳士應該記住女人的生日，而忘記女人的年紀。
It is about respect, so usually we don't talk about these topics so the conversation can go smoothly.
這有關于禮貌的問題，所以我們通常不會談論這些話題，這樣對話才能順利持續下去。
Don't talk about political orientation , partisan, political figure，political consciousness , political policy.
不要談論政治取向，黨派支持者,政治人物，政治意識，政治政策。

I feel if i know you well it's ok to ask but if i just met you it's a little rude to ask if i have a BF or husband.
我覺得如果我和你很熟的話，就沒關系，如果是第一次見面就問，你有沒有男朋友就有點魯莽。
You also can talk about some upcoming event.
還可以談論即將到來的一些事情。