Ren-Eliza

Don't dwell on the past. People that have left you behind in your life are not worthy of your time. When you want closure (whenever that may be because honestly, it takes a long time to get over it and accept what happened), talk to them if that pleases you, write to them if you must, do whatever pleases you, but don't embarrass them because even they were a part of your life once. Whatever happened between you and someone else, is between you and them. Respect them but respect yourself also.