Just trying to understand how people process matters of the heart....

I'm sure that most of us have encountered heartbreak in our lives whether it be in a relationship, marriage or even if you had feelings for someone but they never felt the same, or whatever other reason it may be. Some have experienced more than others. How did you manage to get through it and move on, have you managed to get through it? How has it affected you or changed you as a person for the better or worst?