Fetching is far more than simply someone attractive
- someone who can be called fetching has a certain aura
about them: they wash over you
. You can feel them in your spine
as they pass you by and smile their jolly
The word has kinship with cuteness - but less in the sense that the target person is cute, than the idea that they bring out the cuteness in you. You're forced to associate them with a word like fetching which is an infinitely cute way to describe someone - it almost makes you giddy and heady to say it.
You would only call someone fetching if there's a good chance of you swooning sometime in the near future.