Ex Issues

So I've been having problems with my Ex. We broke up a month ago because he was moving and he didn't want to hurt me. He failed btw. 
He begged to be friends with me so I agreed. 
Lately he's been really depressed and angry looking. Some days he'll be really happy and like his normal self. He keeps blocking me and then unblocking me. And apologizing. I still care about him a lot. (Not romantically) I'm not sure if I should reach out of not. 
Help!