The speaker describes ending a relationship with someone who, in his view, was selfish and dismissive. At first he insists he is not hurt and does not still care, presenting himself as ready to move on. Later, he admits that the relationship once made him feel small and vulnerable. The shift suggests that his confident tone may cover real pain, even as he chooses independence.
Several images explain the conflict. “Rained on my parade” means spoiling someone’s happiness or plans. “Break down my walls” suggests becoming emotionally open and trusting someone, which made the speaker feel exposed. The repeated phrase “go and love yourself” sounds like advice to value oneself, but in this argument it is also a cutting way to tell the other person to leave and focus on themselves.
The speaker gives examples of controlling behavior: the partner criticized his friends and opinions and tried to make him forget where he came from. His mother’s dislike of the partner is presented as evidence, though it is still only his perspective. The song balances resentment with self-reflection: he recognizes that he did not notice the problems sooner and wonders whether trusting the person was foolish. His claim that he feels “nothing” sits uneasily beside these memories, leaving open whether he is fully over the relationship or still working through it.