Best Friend Forever. 多经常用于女生之间的。

　　例如： We have so much in common, it‘s like you are my BFF.

　　我们有这么多的相同点，感觉好像你就是我的好闺蜜一样

　　Bro 哥们 Brother的缩写，commonly used in greetings,年轻男生之间

　　例如： Hey, he's my bro, I watch his back, and he watches mine, we're like brothers, yah know?

　　他是我哥们，我罩着他，他罩着我，我们就像亲兄弟一样，懂？

　　Friend Zone 备胎，好人卡

　　字面意思：朋友的区域

　　I spent all that money on a date, just to find out she put me in the Friend Zone.

　　我花了所有的钱去和她约会，最后发现她只是把我当朋友。

　　FWB 床友 Friends With Benefits

　　英文释义：casual relationship implying no committment, but involving companionship

　　例如：she doesn't have a boyfriend, but she makes out with her FWB sometimes

　　她没有男朋友，但她和他的床友时不时么么哒...

　　side chick 小三

　　英文释义：a female that is neither a male's wife nor girlfriend but has relations with the male while he is in another relationship

　　例如：Kim和Sally在八卦Tina

　　Kimmy: Look at Tina and Josh...are they going out?

　　Sally: No Kimmy! Josh is dating Laura. Tina is just his sidechick.