What's funny is my mom really does live with her best friend as housemates now that my dad is dead and it really is just a friendship and they hate it when people think they're in a relationship. Especially when my mom mostly stays downstairs and her friend mostly stays upstairs and they generally just share the kitchen and dog walking duties.
I really don't want to pry. And here's why- Once, I said to my wife that it looks like people are giving someone a blowjob when they start to eat a banana and my mom walked into the room and said, "what's so bad about that?" And she was in her 70s then. I definitely don't want to know about my mother's sexual proclivities now that she's 82.
Oh dear. She's a smut novelist. Well hopefully you are supportive and add her books to your library. 😄
I would absolutely cringe if my mom brought that up but I think that is largely because that is not something my parents really ever talked about. My wife had the opposite experience where she and her mother were fine talking about it growing up.