Ne-Yo's 'Sex With My Ex' is a heartfelt R&B track that delves deep into the complexities of rekindling intimate relationships with a former partner. The song explores themes such as lingering emotions, regret, and the emotional turmoil that comes with revisiting a past relationship. Ne-Yo passionately reflects on the powerful pull of physical intimacy that makes it hard to let go, even when the relationship has ended. The poignant moments in the song highlight the internal struggle between the mind and heart, questioning whether the comfort of familiarity is worth the pain of potential heartbreak. Ne-Yo's soulful vocals and evocative lyrics take listeners on an emotional journey through the tension and tenderness of revisiting an old flame.