sometimes we need to let go for ourselves as much as they need too...does that make sense? Maybe you need to drop the rope...to stop trying to get her back or whatever....
I also have a bigger question for you...maybe not one you need to answer but one you might want to think about. I know you have kids together so you need to get along and all but...is this someone you really want as a "friend"? I mean...my friends don't treat me like that. Do you want her as a friend int he hopes that it may turn into something more and if so, you need to back that truck up. Just something to chew on
sorry