I think Dave and his lover are caught in the middle of a huge war and the only thing they have to hold on to is each other and their love. He is also describing how their love will pursue after they inevitably die. He mentions that when the world is over their lives will have just begun similar to starting a new life after death. They will still be together at the top of the mountain thats no longer there aka heaven. War can destroy everything but love
I think Dave and his lover are caught in the middle of a huge war and the only thing they have to hold on to is each other and their love. He is also describing how their love will pursue after they inevitably die. He mentions that when the world is over their lives will have just begun similar to starting a new life after death. They will still be together at the top of the mountain thats no longer there aka heaven. War can destroy everything but love