The pain of infidelity is often described as a physical wound. It feels like a deep cut that's difficult to heal. A person may feel like they were slashed across the heart with a knife and they're bleeding out. It's important to understand that this is an emotional experience, not a physical one. There are no knives or wounds involved, but it can feel like there are. The good news is that the pain does go away with time and healing. It doesn't happen overnight, but it does happen over time.