Abuse? Manipulation?

So me and my ex are recovering addicts. I'm moving out of state to start fresh and get away from the bad environment.. he is always saying he loved me doesn't want me to go. he's depressed and saying he's over it and doesn't want to live and that I'm leaving so he's mad/sad and I feel like he's blaming me for his depression and making me feel like IF he did something it's my fault... is this a type of manipulation? I don't know how to handle this... I've tried multiple times to tell him and let him know this is what's best for me and that I need to find myself again. And hopefully he can too. Need advice..