I Could Have Told You

The speaker looks back on a failed romance and feels he could have warned someone that the woman would cause them pain. But the warning would probably have been ignored: the person was in love and did not want to face the truth. The mood shifts from regretful confidence—“I could have told you”—to restless sadness, as the speaker lies awake hearing the woman’s promises in his mind.

“Toss and turn” is an everyday expression for being unable to sleep because of worry or distress. The promises she “will never keep” suggest that her words sound reassuring but are not trustworthy. The repeated idea that she will find someone new implies a pattern of brief relationships, though the lyrics do not explain why she behaves this way.

The speaker may sound as if he is protecting someone from heartbreak, but his own tears show that he is hurt too. It is not fully clear whether he is remembering his own experience, imagining what will happen to another person, or speaking from both positions. His repeated claim that he could have warned them may express genuine regret, but it may also be a way to cope with helplessness after the pain has already happened.