Although your heart is breaking, you must face the truth that a relationship has ended.

尽管你的心碎了，但是你必须正视事实，那就是一段恋爱关系已经结束了。

《柯林斯英汉双解大词典》

In other cultures, placing your hand upon your heart is to indicate that you are telling the truth.

在其他文化中，把手放在心口表示你在说真话。

youdao

From the standpoint of truth the heart need not worry itself so; for nothing compels it to wear itself to tatters.

从事实的观点来看，心不必那样地忧虑，因为没有什么东西强使它裂成碎片。

youdao

My friends are gone, but that's a truth Nor grave nor bed denied, -- Learned in bodily lowliness And in the heart's pride.

美丑唇齿相依,心的高傲和肉的低贱，都证实这条真理,我伙伴们虽死，但否认它。

耶鲁公开课 - 现代诗歌课程节选

She did this with the best interests of the public at heart and in pursuit of the truth.

FORBES: Protecting The First Amendment

The truth of the heart is easily obscured in a society that takes its cues elsewhere.

ECONOMIST: Orhan Pamuk

Ah, the emotional truth, the heart of what is arguably one of the greatest movies of all time and also happens to be about business.

FORBES: Enron--The Movie--And The Movie Business