Answer:
I am the book one can never finish reading
I crushed on Wendy Darling.
I am pronounced as one letter written with three. I come in blue black brown or grey. Reverse me and I read the same either way.
What has one head one foot and four legs?
Goes over all the hills and hollows, Bites hard, but never swallows.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?