The song "Without You" by Heart expresses the deep sorrow and regret of a person who can't forget a past love. The lyrics convey the pain of losing someone and the realization that living without them is unbearable. The protagonist reflects on an evening when their lover was leaving, and despite their smiling face, their eyes revealed their sorrow. The protagonist laments how they let go of their lover and now acknowledges that it is only fair for them to know the impact of their absence. The chorus emphasizes the inability to live or give anymore without their significant other. The repetition of this line underscores the profound longing and emptiness the protagonist feels without their love. Overall, the song explores themes of lost love, regret, and the emptiness that comes with living without the person who was once everything. It encapsulates the pain and longing associated with a broken relationship and the struggle to move on.