gullible 好骗的，轻信谎言的
Did you know "gullible" is not in the dictionary?
你知道“gullible”这个词不在词典里面吗？
Oh, really!??!?!
啊？真的吗？！？？！

white lie 善意的谎言
A white lie is a lie that you tell someone that is good or nice about that person but in reality is actually a lie.
white lie就是你对人说的一些好听的话，但事实上是假话。

lead someone on 诱导，欺骗某人，让对方以为自己喜欢他／她
Leading someone on usually means that you are pretending to be interested in someone that is interested in you in order to gain something from them.
Leading someone on 通常表示你知道某人对你有兴趣，于是你假装对他有兴趣，为了想要从他／她身上获得一些东西。
I think she is leading me on. She always texts back but never wants to go out when I ask.
我觉得她在玩弄我，每次她发消息我都会回，但是每次我约她出来她都不愿意。

trustworthy/reliable 值得信任的，可靠的
I like Jack. He seems very trustworthy.
我喜欢Jack。他看起来非常值得信任，非常可靠。

confide in someone 信任，信赖某人
Of course, you can confide in me -- I'm your best friend!
你当然可以信任我了，我是你最好的朋友！

shanghai -- to trick or force someone into doing something unwillingly
诱骗或强迫某人去做他不想做的事情
I got shanghaied into doing something.
我被迫／被哄骗去做某事。

shanghaier 诱骗者