The black dog

Hi all. I'm from the lived experience forum but I think I need to wander over here, hopefully for some advice. I've recently been disgnosed with anxiety and depression which has been quite debilitating in the last few months. My partner has been the most loving, caring, supportive person ever. Last night we ended up in emergency because he had chest pain and couldn't breathe. Turns out it was a panic attack. While we were there he broke down in tears and said he is afraid he is becoming depressed because his heart breaks to see me so sad. He said he is so scared of what's happening to me, and not being/doing "enough". Now we are both scared that we're both going to spiral deep down into this black hole and neither of us will be able to pull ourselves or the other out. Any advice?? He doesn't want to see a psychologist (of course!) thanks in advance