It helps on both ways, when you ignore and when you are ignored. It helps you forget. It happens intentionally and unintentionally, but it hurts on both ways too. When you ignore without recognizing that you are ignoring you get hurt by the fact that maybe you started to forget but it helps by the fact that you've got strong enough to ignore. And when you are ignored, you get hurt and frustrated and thus you tend to become strong and ignore too as a response and that just helps you forget more. Have I got you there? Ignorance is bliss! :)
*That is a very old draft, but I'm posting it today.