As a straight adult male there have been several times where I've called a 14 year old boy as cute.
I seem to come across a lot of 14 year old boys and even 15 year old boys in my location where they look very cute and even some baby faced.
Some of these 14 and 15 year old boys look around 6 to 8 years old when you see their face.
And if it weren't for the fact they were taller than a 6 year old or 8 year old boy then I would certainly believe they were of the ages of 6 to 8 years old.