Finally telling the truth was a great weight off my shoulders.

最后讲了实话使我如释重负。

《牛津词典》

You have nothing to lose by telling the truth.

你讲真话是不会吃亏的。

《牛津词典》

I have a sneaking suspicion that she's not telling the truth.

我暗自怀疑她没讲实话。

《牛津词典》

She was known to have said: "Don't spoil a good story by telling the truth!"

VOA: special.2009.01.11

That is to say that when we think we're telling the truth we're actually using worn-out figures of speech.

也就是说我们认为我们在讲述真理的时候,我们实际上却在使用一些陈腐的修辞手法。

耶鲁公开课 - 文学理论导论课程节选

Let's say that your brother who you are really close to is dating a girl that is not telling him the truth.

假设你有个关系非常亲密的哥哥，他正和一个女孩谈恋爱，但这女孩却并没有以诚相待。

The thing is 课堂 - SpeakingMax英语口语达人

That was a very tough lesson, but for the first time they are telling the truth.

WHITEHOUSE: Press Briefing

Again, this will turn on the factual question of who is telling the truth.

FORBES: No Happy Mothers Day: Kobe Bryant Disputes Mother In Lawsuit

Determining who is telling the truth in a he-said, she-said situation is rarely quick or easy.

FORBES: No Happy Mothers Day: Kobe Bryant Disputes Mother In Lawsuit