Reading the posts below, I think there must be several opinions on what forgiveness is.  Forgiveness is very important (it's mentioned in the Lord's prayer and countless other times in scripture) but I have never read anything that says forgiveness means letting a person continue to cause you harm.  Dr. James Dobson wrote a book titled "Love Must Be Tough".  In it he does an exceptional job of laying out the parameters for forgiveness in marriage and other relationships but stresses "tough love", meaning we forgive but hold the other person accountable for their actions.  This is a very freeing concept in that it enables the harmed person to begin to move away from bitterness and toward peace.  Forgiveness is rarely easy but I've learned, from my own experiences, that good mental-health isn't possible without it.