Well I think the reason is part of you still has strong feelings for him. It is hard to let go when part of you is still attached or whatever you want to call it. It's like any other relationship, letting go is hard when we are hurt. You need some sort of closure. Would it be possible to do that? Is it really that you want to file a charge or is it that you are hurting because of the way it terminated? I am not familiar with the situation but I did read your blog link on one of your posts and it looks like this is still a lot of work for you to do on this.