"Just Sex" is a song by Canadian singer-songwriter Delaney Jane about a complicated relationship where two friends cross the line and engage in casual sex, despite past mistakes and regrets. The lyrics describe the two characters as being bad at keeping their promises and constantly finding themselves in bars together, drinking and conversing to forget about their problems. While they enjoy each other's company and physical connection, they both struggle with their emotions and the consequences of their actions. The chorus, "And it hurts like heaven/ But it's good as hell/ Let's not think about what's next/ It's just sex/ And we do it so well," portrays the complexity of their relationship and their desire to separate their physical connection from the emotional baggage that comes with it. The song highlights themes of self-medication, manipulation, and past mistakes, as the characters struggle to move on and find closure in their relationship. Overall, "Just Sex" presents a candid and honest portrayal of modern relationships and the struggles that come with navigating the line between friendship and casual sex.