Why does it hurt when my bf touches me down there when I'm turned on but when I'm not turned on it doesn't hurt?

When you are turned on, your body produces more natural lubrication which helps reduce friction and discomfort during sexual activity. When you are not aroused, there may be less lubrication which can lead to increased friction and potential discomfort or pain. It's important to communicate with your partner and take things slow to ensure a pleasurable experience. If pain persists, it's a good idea to speak with a healthcare provider.