What does a dream means if you dream of your love one having an affair with other woman?

Dreams provide information about the dreamer's thoughts and feelings. This dream reveals the dreamer's jealousy; perhaps the dreamer has denied those feelings or tried to ignore them. The dream provides no evidence or information that the affair is real.

However, dreams can also draw attention to things the dreamer does not want to notice or admit - it could be pointing out some obvious indications of unfaithfulness. Either way, the dream is about the dreamer's thoughts and feelings, and the best response is to take a careful, honest, wide-awake view of your loved one's behavior. That will calm unfounded jealousy or bring a real problem into the open.

It might mean that your mind thinks what it wants. It's not neccesarily that your loved one is cheating on you, it might just be your emotions making your mind being jealous.