Within most relationships, there is an inherent ‘standard creepiness threshold’, a line below which you don’t date, lest you be seen as a creepy creep.
This line is plus or minus (your age minus (half your age plus seven)), so for instance, a twenty year old should typically not date below 17 nor above 23. A fifty year old should not date below 32 or above 77.
However, this line is blurred in the kinky world. You can have twenty year olds who have a wealth of experience, fifty year olds who are fresh and inexperienced.
We are not able to judge where the line lies solely on age, nor experience.