Just not European. To be fair in the UK there was a 50/50 split amongst my friends on how liberal their families would be. Maybe 60/40 but a plurality of parents would let their 15+ year old children have sleepovers with their bf/gfs. I suppose the age of consent is 16 here so that makes a difference.

Mine were not so liberal on sex. They got pissed with me when I was 17 for having my gf at the time stay the night in their house.

Pretty relaxed about drugs though, although that’s another conversation.