The Jackson 5's song "What You Don't Know" is about the pain and longing experienced after a breakup. The lyrics express the idea that ignorance can sometimes be bliss, as not knowing certain things can protect one's feelings from being hurt. The protagonist is trying to find peace of mind in the advice given by others, who tell him that what he doesn't know won't hurt him. However, he struggles to find solace in their words and continues to miss his ex-lover. The song suggests that the protagonist's baby has left him, and he wonders where she is every day. Despite being told that not knowing the truth about her whereabouts can ease his pain, he cannot find peace of mind. He desperately calls for her to come back, emphasizing his need for her presence in his life. The lyrics convey his longing for her and the fact that he cannot move on or find happiness without her. Overall, "What You Don't Know" reflects the emotional turmoil and yearning for a lost love, as well as the struggle to find peace of mind amidst the confusion and uncertainty of a breakup.
