At what age for a man is it no longer appropriate to call a girl “cute” and it just becomes creepy?

Let’s say I’m a 45 year old man, 6’1”, average weight, better than average looking, clean cut upscale business man type…I’m not… but let’s say I am.  If I call my neighbor’s daughter from down the street “cute” as a newborn it’s OK, if I call her “cute” at age 3, it’s OK, if I call her “cute” at age 8 it’s ok, but if I call her “cute” at age 13 does it start to become creepy?  At age 15?  At age 17?  What if I don’t know the girl at all?  At what age does it start to become creepy and inappropriate and why?  Would it be ok because I’m a clean cut, good looking guy? Does it depend on the tone of my voice?  What if it’s 100% completely genuine and complimentary and not in a creepy tone what so ever?  What if I was a 45 year old, balding, fat, scruffy looking kind of guy…which once again I’m not, but what if I was and said it in a very genuine tone in front of her parents.  Does it depend on the relationship with the parents? Would it be creepy then?  Does it depend on what the person looks like?  If I’m the same clean cut good looking, 45 year old guy does it become ok to call any girl “cute” at age of 25 or is that still creepy.  What ages is it no longer creepy to call a girl cute?  What if I was a 45 year old woman calling a 18 year old guy cute, is that creepy or am I now just a “cougar” which, by today’s standards is ok…well with some people it’s ok.  I’m just curious, because the business I’m in I see cute girls all of the time, but far be it from me to complement them and call them cute for fear of being pegged as a pervert.  Now I know people will say, well it depends on the person, well what if you don’t know me from a hole in the wall.  Anyway, all I’m saying is that I find it interesting that for a girl between the ages of say 14 to 25 it comes across as creepy or inappropriate if a guy in his 30’s on up calls a girl “cute”.  I mean as long as the dude isn’t saying it in a Night Time Sneaky Uncle perverted creepy sort of voice it shouldn’t be such a bad thing for a guy to call a girl cute.  I guess all the dirt balls out there that scream cat calls and other inappropriate things at girls pretty much fucked it up for the nice guys trying to pay a girl a complement.