我妈妈真的很难过，因为他指责她和另一个男人有暧昧关系。

My mom was really upset because he was accusing her of having an affair with another man.

《柯林斯英汉双解大词典》

得知一片森林消失了之后，我真的很难过。

It makes me really sad to learn that a forest has disappeared.

youdao

听到这个消息，我真的很难过。

I was really bummed out by the news.

youdao

And it's just dying, it was really sad and so,

现在似乎要倒闭了，这真的让人很难过。

旧金山的报纸 - SpeakingMax英语口语达人