I can't remember the last time I was accused of cheating at chess - if ever.
But today, while playing a 5 2 blitz game on chess.com, my opponent sent three chats in the game, but I didn't see them until after he resigned. All three chats claimed I cheated - including one "cheater boy"
I guess I should be flattered by the accusations?
In reviewing the game, it's apparent (s)he just blunders - plain and simple.