Because of You by Ne-Yo is a contemporary R&B ballad that explores the powerful, often uncontrollable nature of love and infatuation. Ne-Yo expresses how the overwhelming emotions he feels towards a person have taken over his life, as he finds himself constantly thinking about them. Key themes include love, desire, obsession, and the addictive nature of romantic feelings. Poignant moments in the song include lines where Ne-Yo admits that his life has changed and that he is driven by his strong emotions, highlighting the deep impact that this person has had on him.