Carolyn Hax: Does the painful history matter when an ex seems new and improved?

There are really two basic kinds of heartache: of misfortune and of intent. So, for example, a breakup when a couple grows apart is heartache of misfortune — because you just weren’t right for each other, oh well. A breakup when one of you knowingly betrays, humiliates, abuses or deceives the other is heartache of intent.

Source: WP