I've come to the epiphany that there are people that, on the inside, are not good people,...and when they interact with each other,...as a matter of civil discourse, they are often using deceptive language,...or, in your example, outright lies. This is, unfortunately, a part of our communication repertoire,...when dealing with someone face-to-face. This type of behavior,...this indirect language, is non-confrontational,...is even considered polite in some circles.
As an autistic who may not understand this yet,...and is often using direct language,...it can be rather confrontational or even rude to just "say what you mean". You may actually confuse a neurotypical person by being direct,...because they might not recognize it as such. They might try to "read between the lines"..."So, what you're really trying to say is...."...and then they misinterpret and get things totally wrong. Then you have to repeat and explain yourself again,...or worse, you write an e-mail or text and they get angry at you,...because they jump to the worst possible meaning of your communication. That's another frustrating trait of many people.
I have lost count of how many times over the many years I have had this issue. People take things the wrong way, get angry with you, and you are "a bad person" for stating the obvious truth (albeit from one's own perspective). "You yelled at me!"..."No, at no point did I even change the tone of my voice."...or,...if it was written, THEY put a vocal tone on what they read, that had they just read the words, would have a totally different meaning.
No doubt, I think the nuances of how to interpret language, its intent, the micro aggressions, the body and facial micro expressions, cultural nuances,...there's a lot going on. Certainly, with more and more people isolating themselves behind their electronic devices, face-to-face communication skills are fading away. I think neurotypicals and autistics have difficulties with communication,...but in different ways. As frustrating and sometimes anxiety-inducing it is to just talk with someone, it's a skill, takes a lot of practice,...and for us,...it can be mentally exhausting and confusing.