Unhealthy Relationship

So my bf just had an anxiety or panic attack idk which and kept repeating stuff over and over again ( like he was malfunctioning) he said he felt like he needed to step away because he felt like he needed to hurt himself or die. I’m scared and this is clearly not okay. I’m beginning to feel like this is not a healthy relationship which sucks cuz he is a great guy. It’s just so scary hearing him say that. He claims he felt that I was gonna leave him... but he shouldn’t be talking about wanting to die or hurting himself.