"Watch" by Billie Eilish is a song about a toxic relationship. The lyrics depict a situation where the love between two people feels fake and unfulfilling. The speaker realizes that if they were truly meant to be together, it would have happened by now. Despite this realization, they still feel the pain and longing for their partner. The song talks about the fire that the partner ignited in the speaker, causing their heart to burn. The speaker mentions watching the partner's car burn as a metaphor for watching the consequences of their actions unfold. The partner never took responsibility for the pain they caused but instead moved on without looking back. The lyrics also highlight the speaker's frustration and disappointment in the partner's lack of effort and commitment. They wonder if calling their name would make them come running, but they know deep down that the partner never reciprocated the same level of care or investment in the relationship. The song ultimately expresses the speaker's decision to move on and find freedom from the toxic relationship. They vow to never let their partner back into their life to extinguish the fire they started. Overall, "Watch" delves into the emotions of a one-sided and unhealthy relationship, conveying the pain, frustration, and ultimate empowerment of walking away.