KGBlack's "Regret" is about the moment after a blowup, when someone realizes how much damage their anger has done. The opening images set the scene: tears, a shattered vase, words said in heat. The line "Stop, you're saying things you don't mean" reads like the speaker trying to talk themselves down, and "Breath in. Breath out" sounds like a last attempt at calm that comes too late.
The middle stanzas turn into questions. The speaker, who seems to be addressing themselves (or a "you" they can't quite separate from themselves), asks "What have you done?" and "Was it worth it in the end?" The picture of a family that looks happy "when you're not around" is especially painful, since it suggests the speaker now feels like the problem. The ending offers a bleak kind of comfort: "You can live in yesterday," where pain is only "a thing that looms in your head." The mood is raw, guilty and lonely, with a hint that escaping into the past is a trap rather than a cure.