Missing someone feels very painful. It’s also a lonely experience. When you miss someone, it takes a toll both physically and emotionally. You may either go off your food or turn to junk food to comfort you. You find it difficult to concentrate on anything other than thinking about them. You find yourself crying all the time. If you understand how to know if someone misses you, it provides a small shred of comfort, knowing they feel it too.
If the other person feels the same way, then often you can make amends and find a way to get together again. On the other hand, if you are sure they are not missing you, it is time to move on.