Long story short ex partner had a long term affair and we split 18 months ago. He is stil with OW and my best friend has now added her as a friend on social media. Her husband is close friends with my ex. Am I being unreasonable to be quite hurt by this? I haven’t said anything, and Im not sure if I just need to suck it up and deal with it, but it is making me anxious that they will now be able to see photos etc, despite being blocked by me, as best friend is tagged in so many posts