Long story short, my wife and I have been married 10+ years. She just changed from her maiden name to mine a couple weeks ago. I kinda miss her old name, it feels weird having the same name now.
I'm Spanish (we don't change names after marriage there), and my (British) partner wants to take my name. Rationally I know that's typical in the UK. But subconsciously, I feel like the people who share last names are siblings. I don't want to feel like my partner and I are siblings, that's so weird!!