If I were going to lie about a personal communication, I would follow Trump's lead and tell a whopper.
Perhaps some exaggeration of the orgies my same informant recounts.
I have chosen not to reveal my source so that my informant does not suffer vindictive blowback from His Satanic Majesty.
BTW...
Try getting Trump to "source" any of his 13,000 in-your-face lies.
You could start with Mafia Don's claim that Melania entered the United States legally, and that she did not lie like a dog on her application for residence and citizenship. https://paxonbothhouses.blogspot.com/2019/09/melania-trump-got-us-residence-status.html