He's not a fighter...

I learned pretty quickly that my son is not a fighter. He doesn't like confrontation, instead he would rather everyone get along. My case in point we were at the park yesterday and a little girl and her dad showed up. My son loves other kids and considers them all his "new friends" that's his words. Unfortunately the little girl did not feel the same way and as he tried to play with her she pushed him. Instead of pushing back, or lashing out, he just came back and told me that she pushed him. I think he was more hurt that she didn't want to be friends more than anything else. The little girl's dad gave her a good scolding and after several uncomfortable minutes between me and him and us doing our best to have our children avoid each other the little girl came around and decided to be friends and all was right with the world. While I love that my son is sensitive enough to want to be friends with everyone I also want him to know that it is ok to take up for himself. This produces quite a quandary though, how do I get him to understand that we don't bully other kids but we don't get bullied either? I haven't figured it out yet and luckily he hasn't been in a situation that requires him to fight because I just don't know that he would do it. He does wrestle and play fight with me but in a real situation he would probably walk away, I'm ok with that as long as he is not daily being harassed by some kid whose parents have not taught him any proper manners. This is just the latest in my long list of current anxieties.