Kind of a narcisstic person

Ask A Therapist OnlineKind of a narcisstic person
Nlm asked 12 years ago

This person at work just ruins my day, he asked me out and I politely told him not interested. From then on any mistake I do he complains to the boss any small issue becomes big and he let everone at work know. He recently sent me a message wishing me Happy Haloween and I replied telling him by abusing him, he showed the msg to the boss. Please advise on how to explain to the boss.