"Who's Making Love" is a song originally performed by Johnnie Taylor, but covered by Jimmy Barnes in his album "Soul Deep" released in 1991. The song explores the theme of infidelity and betrayal in a relationship. The lyrics address a group of men, urging them to consider the consequences of their actions. The singer asks the men to think twice before cheating on their partners, as there may be someone else who is also involved with their "old lady" while they are out having affairs. The song highlights the idea that no one is immune to betrayal, and the consequences can catch up to them when they least expect it. The lyrics suggest that the narrator himself experienced this situation firsthand when it was too late for him to change his ways. The story presented in the song serves as a cautionary tale, reminding individuals of the potential repercussions of their actions. It emphasizes the importance of treating one's partner with respect and fidelity, as infidelity can lead to heartbreak and the loss of the ones they love. Overall, "Who's Making Love" conveys a message of self-reflection and encourages individuals to consider the impact of their actions on their relationships.