hang somebody out to dry这个短语中的“把某人晾在一旁、把...害苦了”意思是某人需要帮忙，而你却把别人晾在一旁。

【例句】
I finally decide to cave and be a girl for you, and you hang me out to dry?
我终于决定当你的闺蜜了，你却这样把我晾一旁？

I hate to hang you out to dry and if I could help you in another way, I would.
我不愿意把你晾在外面，如果我能用另一种方式帮助你，我会的。