I dreamt about seeing someone I love die?

Last night I had a very weird dream. I do not often remember them so this has really stuck with me.

In my dream my cousin, who I care for a lot, said he wanted to die and asked the doctors to take him off the machines.(in real life he is perfectly healthy) I was in the room and watched him die and I was in floods of tears. I woke up and I felt a pang of sadness and shock and I couldn’t get back to sleep after that.

Any interpretations?