guys help me..please

Do あなた mean your ex is posting/copying pictures of あなた and him on fb, または just your pictures?
If it's あなた and him, または him and your friends, anything with him inside then all あなた can do is -
1. ask him to stop taking your pictures even though they have him in it, they are YOUR pictures
2. block him as a friend
3. レポート him to the fb help team and explain that though he is in the pictures they are your pictures and あなた don't want them to have them
4. don't put them up

If they're your pictures with nothing about him in them あなた could -
1. レポート him immediately for stealing/posting your pictures on fb without your permission
2. block him as above
3. ignore it as your フレンズ say and let him get on with it.

あなた should just ask him kindly to stop posting those pics. If he doesn't listen, just ignore him. He's bound to stop at some point in time.