It is very hard to tell because girls know how to hide their feelings. If she has not tried to contact you or if she has a boyfriend, chances are she is over you. If she is still trying to talk to you and is single, she might still like you.
you know there over you if they flirt or date other guys
If he has nothing to do with her and you have the trust in him when he says that he is.
you know what im sayin
he says he thinks the world of her
You don't, but if she is then that is her problem. It is your ex-girlfriend, you should have moved on.
You can't "know" for sure without mind reading. You can watch for signs or ask her though.
If he has moved on and has a new girlfriend it is time for you to realize it is over and move on as well.
ask them
Maybe your girlfriend isn't over her ex husband.
you never know..... men are a mystery
there is not much you can do you just have to get over them both
If she tells you.