In the movie "Drop Dead Fred", Drop Dead Fred was the IF of the Lead character, both at her childhood and then 20 years later when he came back. He was virtually unchanged. he did not age in the same way that people age. (I do not think this was mentioned yet but I could be wrong)
IN my opinion, I think Imaginary Friends age Like Cartoons.
Cartoons do not age, some examples:
Tom and Jerry, Scooby Doo, Muppets, Buggs and Daffy, ect...
all these characters have been around for over 30 years and each of them have had new shows/movies in the past few years. The main characters never changed.
Basically they do not age, but they do develop over time. a good example of developing over time, is the Simpsons. Look at some of there Original 5min skits and they were extreamly different. thus over time, a cartoon character ages by becoming better developed. so IF develop over time, by experiencing new things, but not by getting elderly, ackes or pains.
I wish I could spell.
Monty
