How to comfort a girl when she's crying ?

My younger sister really loves country music especially old country she's obsessed with one of her favorite singers Marty Stuart she's upset that she found out he's married she didn't even know it she knows everything about him. She thought he was dating his wife for 20 years when really he was married to her it made her upset when she heard that. She said he was very sexy in the early 90's when he first started out even now at 60 he's still hot. She's had a boyfriend for 3 years now who she's obsessed with too. I don't know why she's crying over a singer. She met him when she was a teenager but she doesn't remember she really hopes to see him again this summer she worries about him with this virus especially at his age. A few of the older singers have already died from the virus. All she's done for the past few days is watched his videos and cried about him. She said she had a dream about being with him. There's a certain song she likes by him she said she feels like he wrote it for her. How can I help her feel better ? Why do girls cry over guys who are famous ?