Forgiveness or Stupidity?

When someone's hurt you so many times and you take them back everytime, is that stupidity or forgiveness? Hopefully you learn from every experience and you don't do the same things twice, but is it bad to take them back with changes? How do you know if they really changed? What if they broke every promise they ever made? What if they apologized? What if you always find yourself forgiving them every time when you try your hardest not to take them back? What if you knew you were completely over them, but then you talk to them like nothing happened? How do you get over those soft spots that pop up when you talk? How does the ocassional awkwardness end? What if taking them back means making some of the people, that matter to you most, mad? Oh geez. I'm a jumbled mess. Sometimes, I don't know what to do or what to think. But it always helps to put it out into the open and get some thoughts and oppinions on it.