I went through the exact same feelings. Reaching out for closure was not the best thing for me, personally. It started another cycle of hurt feelings and miscommunication, when I should have just left it the way it was and went on with my life. I’m not very good at giving advice, but I hope these help:
http://dev.tinybuddha.com/blog/how-to-move-on-when-youre-hurt-and-youre-waiting-for-closure/
http://dev.tinybuddha.com/blog/silencing-your-lizard-brain-stop-feeling-pressured-and-inadequate/