It is both beautiful and incredibly heartbreaking to witness someone you love die.
Beautiful as it’s the last thing you can do on earth for someone you love deeply. To hold their hand and give them permission to leave, even though every ounce of your being is screaming for them to stay.
Emotions between you are shared as if you share the same soul.  At this time there is not need for many words, you feel the way together. You feel peace and serenity in a silence between you and an acceptance and understanding that death will shortly join you.

As death comes a small part of you goes along too, the person who remains here will never be quite the same person who walked into the room.

I don’t think I need to explain heartbreaking, it speaks for itself. I have found time does make it easier, it never leaves you but you learn to live again.