good 4 u

The speaker reacts to an ex-partner who seems to have moved on quickly and is doing well. The repeated “good for you” sounds like praise, but it is bitter and sarcastic: the speaker is hurt, angry, and struggling, while the ex appears unaffected. As the song develops, the speaker shifts between accusing the ex, questioning their own emotions, and admitting how painful the contrast feels.

Several images make that pain vivid. Crying on the bathroom floor suggests a private moment of intense distress, not just ordinary sadness. Saying the ex’s apathy is “like a wound in salt” compares their indifference to something that makes an existing injury sting more. The claim that it is “like we never even happened” suggests the speaker feels their shared past has been erased, especially as the ex begins a new relationship and succeeds in other areas.

The song leaves room for uncertainty about what the ex truly feels. The speaker sees them as uncaring, but also wonders, “Maybe I’m too emotional,” so their account includes self-doubt as well as blame. Calling the ex a sociopath is best understood as an angry exaggeration, not a reliable diagnosis. The contrast may reflect the speaker’s perspective: the ex seems fine from the outside, but the lyrics cannot prove what they feel privately.