How can I deal with my partner depression?

Ba

It’s been a while since I started to date this incredible guy, we have loads of things in common and in no time we get unbelievably attached. I recently found out he is suffering from a severe depression. I stop talking to him last night because I couldn’t handle him talking about death, it was killing me. He told me that he’d see a specialist but still I don’t reply him. What would you do if you were me?