Here, the speaker describes the slow end of a relationship, felt mostly from the side of the person being left behind. They watch the other person's interest drain away, and the silence between them says more than words could. The speaker is worn out from waiting, yet feels powerless to change anything.
The most painful moment comes when the other person offers a flat excuse: "we just don't know how to talk to each other." It sounds reasonable, but it shuts the conversation down, and the speaker feels erased, "blackened," as if a light has been switched off. The title, "invisible," fits this idea. Once the speaker was seen, and now they are not.
The ending turns bittersweet. Someone who once promised "the stars" has left only "invisible scars," hurt that no one else can see. The mood is quiet, sad, and a little resigned. The short, plain lines and simple rhymes make it feel like a private confession rather than an angry accusation.