A person who fakes closeness with a person, place, or thing that has recently perished or experienced a catastrophe. They do this in order to receive attention and sympathy. They go about this process by posting on social media and exaggerating the circumstances surrounding their relationship with the person, place, or thing in question. These people are the most annoying and lack self awareness.
"Hey, did you see what Regina posted about Brad's untimely passing?" "Yeah, I didn't even know they were friends. That's some grief groupie stuff right there."
"Wow, Brenda posted another picture of her in front of the Notre Dame from her high school field trip with a bunch of fire and sad emojis. That is bizarre grief groupie behavior."