Telling on someone is read as tension between fairness and loyalty, often with a childhood flavour. Being tattled on points to fear of being caught out for something small.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.