"Oxytocin" is a song by Billie Eilish from her album "Happier Than Ever." The song explores themes of desire, power dynamics, and the darker side of relationships. In the lyrics, Eilish sings about the inability to reverse the consequences of actions once they have been put into motion. She compares this to the sensation of rubbing lotion on the skin, emphasizing the permanence of these choices. The song also touches on religious themes, questioning the devotion of someone who only prays on Sundays and wondering if they would be interested in a more sinful encounter during the rest of the week. Eilish expresses a desire to do things that are considered bad, potentially breaking societal norms, and wanting to see how far the other person is willing to go. Eilish further explores the idea of control and dominance by mentioning the hormone oxytocin, often associated with bonding and affection. She states that she needs the other person for oxytocin, suggesting a desire for a physical and emotional connection. Throughout the song, Eilish acknowledges the potential consequences and judgment of society if their actions were to be discovered. However, she also expresses a defiance towards these expectations by saying that as long as they are both alive, the other person should not even consider leaving. Overall, "Oxytocin" delves into the complexities of desire, power dynamics, and pushing boundaries in a relationship. It explores themes of temptation, control, and breaking away from societal expectations.