Difficult guy problems.

I’ve been talking to this guy I knew from a few years ago for a couple months. We’re kind of doing the long distance thing. I told him from the start I was saving myself for marriage and I would not moving in with him or sleep over. I just think that’s a recipe for trouble. Anyways he’s emotionally dealing with the loss of his mom to cancer and he’s taking up drinking. He called me all drunk and started laughing at me for my choices to save myself. Called me infantile because I live at home and help my parents. And now I’m wondering if this relationship is bad for me. He refuses to get help to deal with his depression and drinking. And he hates the fact I won’t go to the bars with him. I’m afraid he’ll commit suicide if I break up but I’m even more afraid of an abusive relationship. I need advice.