Meaning of "Thought I Knew" by Weezer

The lyrics of "Thought I Knew" by Weezer delve into themes of regret, betrayal, and disillusionment in a failed relationship. The singer expresses sorrow for causing pain to their partner and for not being able to understand them fully, believing they knew the person but realizing they were mistaken. The sense of loss and longing is palpable as the singer reminisces about the past and acknowledges the shattered hopes and dreams that the relationship once held. The repeated refrain of thinking they knew the other person's intentions highlights the disconnect between perception and reality, emphasizing the idea that sometimes people are not who we thought they were. Overall, the song captures the bittersweet emotions of heartbreak and the difficulty of moving on from a failed relationship, marking a somber yet relatable exploration of love and loss.