Name shiftily changed for this one - not sure if it should be in AIBU, but here goes...
DD, 20. We've always had a very open and frank relationship and I have tried hard to never make her feel ashamed of sexual matters. However, unless she wants advice, I don't want to casually hear details, and recently she has been talking about her sex life on Facebook of all places, which can not only be seen by me, but also her grandma and great grandma! Including comments about being interested in BDSM during discussions about a certain well-known recent film release.
She doesn't live at home anymore but we see each other a lot and talk most days. I'm certainly no prude and have plenty of detailed knowledge of all these things, but I really don't want to hear about what my daughter gets up to on that front.
Is this weird? Am I being unreasonable? Should I mention it or resolutely say nothing?