The song "Teacher's Pet" by Melanie Martinez talks about a student having an affair with her teacher and the consequences that come with it. The first verse describes how the teacher flirts with the student, who is innocent and naïve, while the student daydreams about being with him. The pre-chorus shows the student's desperation for the teacher's attention and love, even though she knows he is married and has children. The chorus refers to the student as the teacher's pet, which implies that she is special to him but also suggests that he is using her for his own pleasure and that their affair is a secret.

In the second verse, the student admits that she knows the teacher is lying to her and that their relationship will not last. Despite this, she continues to pursue him and give him what he wants. The bridge is the student's realization that she has been used and lied to by the teacher, and that she deserves better. She asserts her independence and refuses to be his sexual object any longer.

Overall, the song conveys a message about the dangers of power imbalances in relationships and how they can lead to exploitation and manipulation. It sheds light on the issue of sexual misconduct in academic settings and advocates for the protection of students from such abuse.